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David Rothschild

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Three States Hold the Keys to the Election

Posted: 08/29/2012 2:08 pm

If you have limited time to devote to following the presidential election this fall, I suggest you follow the data on just three states: Florida, Virginia, and Ohio. Mitt Romney's only likely path to victory over Barack Obama is to win those three states. Conversely, if Obama can carry just one of those states, he will likely win the election.

All of the predictions in this column update in real-time on PredictWise. I create the predictions with a combination of three types of data: polls of voter intention (via the HuffPost Pollster API), prediction markets, and fundamental data. For the unfamiliar, prediction markets, such as Betfair and Intrade, are markets where the user buy and sell contracts on outcome of the upcoming election.

Obama is extremely likely to carry 191 electoral votes from 15 states and DC. Likewise, Romney is extremely likely to carry 167 electoral votes from 20 states. In these states, the other candidate has a negligible likelihood of flipping the state.

Obama has 46 electoral votes from three additional states where Romney has a non-negligible likelihood of stealing a state (Obama's likelihood of victory): MN (89.5 percent), PA (89.2 percent), and MI (86.6 percent). Romney has 39 electoral votes from four additional states where Obama has a non-negligible likelihood of stealing a state (Romney's likelihood of victory): AZ (94.4 percent), MO (90.3 percent), ND (86.9 percent), and NC (85.2 percent).

I actually expect, on average, one of these states to flip. Electoral College elections are not independent outcomes; it is highly likely that any candidate that picks up a state where he had a 5 to 20 percent likelihood of victory has also won a lot of states where he had a 20 to 50 percent likelihood of victory. In order to capture a long-shot state, a candidate needs something more than an idiosyncratic shock to that state, but also a national trend that carries a few other states with it as well. Thus, it is extremely unlikely that the long-shot state would swing the election; rather, it will pad a solid victory.

Before considering the only eight swing states, Obama has 237 electoral votes to Romney's 206 electoral votes; the winner needs 270 electoral votes or 33 more for Obama and 64 more for Romney.

Florida (29), Virginia (13), and Ohio (18) account for 60 or the 95 remaining electoral votes and constitute Romney's only viable path towards victory. Victory in all three would require Romney to just pick of one of the other five remaining states (Obama's likelihood of victory): Iowa (52.1 percent), Colorado (60.8 percent), Wisconsin (67.5 percent), New Hampshire (71.2 percent), and Nevada (73.7 percent).

If Obama wins Florida (41.1 percent), there is almost no likelihood that Romney sweeps the rest of the states to take the presidency. This is the only swing state that leans Romney. If Obama wins just Virginia (52.4 percent) or Ohio (58.9 percent), it is possible for Romney to win, but highly unlikely, because he would have to virtually sweep the remaining swing states.

Where does this leave the overall election for me as we head into the Republican National Convention -- I have Obama with a 58.9 percent likelihood of reelection, or the exact same likelihood as his chances in the pivotal swing state of Ohio.

 

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If you have limited time to devote to following the presidential election this fall, I suggest you follow the data on just three states: Florida, Virginia, and Ohio. Mitt Romney's only likely path to ...
If you have limited time to devote to following the presidential election this fall, I suggest you follow the data on just three states: Florida, Virginia, and Ohio. Mitt Romney's only likely path to ...
 
 
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07:40 PM on 09/08/2012
Cleveland voter right here
06:13 PM on 09/02/2012
obama only needs 194 by 10:59 EST. he will get that by 9:59 EST. that is my bedtime. and everone should thank the west coast .
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HUFFPOST SUPER USER
Ashlieeeee
Free thinkers are dangerous!
12:21 AM on 09/02/2012
The last election occurred right before my 18th b-day. I've been waiting to cast my first presidential vote to Obama for quite some time now. Hope he wins Michigan XD
10:53 AM on 09/05/2012
Good for you! Your vote DOES count!

Welcome to the Voters Club :)
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sf49erchamps
the bay all day.....
10:10 PM on 09/01/2012
to make a long story short, president obama is gonna win.

obama/biden 2012
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Molly D
02:12 PM on 08/31/2012
Cincy-Cleveland grudge match! Forget 58%. It's 'pick'.
01:38 PM on 08/31/2012
Anybody using Huffpost Pollster for his data is certainly not getting objective data. Much can and likely will change between now and Nov 6 and I would not turn to this guy for predictions.
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HUFFPOST SUPER USER
rray
Jazz Fan in Floriduh
09:57 AM on 08/31/2012
Can't see O pulling off a victory in Fl, people are as sick of his betrayal as they are of Scott.
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sf49erchamps
the bay all day.....
10:11 PM on 09/01/2012
speak for yourself.
08:32 PM on 08/30/2012
Florida is republican,those people are so prejudice they would vote for anyone but Obama, Virginia is all about the money so it;s a crap shoot on that one,( Virginia is so close to washington) Ohio has to be the state for an Obama victory.Those folks in Ohio arn't as easily duped by republican lies and I don't see Ohio voting against their best interests.
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yvettewhite
02:39 AM on 09/07/2012
you are so right st49erchamps i live in ohio and we hate the G.O.P. out here can't wait to see the out come because obama will win here and win big and if he carry ohio its over for romney
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Brad A Lamont
10:32 PM on 08/29/2012
the bottom line is:
no jobs = no obama
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04:15 AM on 08/30/2012
compared to the last GOP Pres.....there are PLENTY of jobs !

Under GOP....WE were LOSING OVER 2 MILLION JOBS every 3 months !

A bit disappointed....but not crazy to go backwards...defeat the Republicans !
08:22 AM on 08/30/2012
Thank you. Short but sweet!
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Brad A Lamont
01:17 PM on 08/30/2012
fact remains:
obama has LOST jobs not gained -- he has a NET LOSS of jobs in 4 years... not accomplished since Truman... meaning there are LESS jobs now than when he took office!
and no jobs = no obama
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pkafin
05:09 AM on 08/30/2012
Well, with 30 straight months of positive job growth, there is not really a "no jobs" argument.
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Brad A Lamont
01:19 PM on 08/30/2012
LMA O -- ohhh gullible left... obama has lost more jobs than gained -- ther are less jobs now than when he took office -- he has a NET LOSS of jobs which hasn't happened since Truman...
so w/o jobs, there will be no more obama
09:52 PM on 08/29/2012
voter suppression laws have been struck down in Florida today !
09:13 PM on 08/29/2012
Are we going to have another case where Obama might win the electorial collage and lose the popular vote?
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TommyObama
Abuse of power comes as no surprise.
12:18 AM on 08/30/2012
Always a possibility. Bush did in 2000. Nixon came close in 1960, and there will always be dispute there, too.
HUFFPOST SUPER USER
Awake-and-Sing
named after a great play written by Clifford Odets
12:20 PM on 08/30/2012
It would serve the Republicans right as they fiercely defend having an Electoral College because it has historically given them an inbuilt advantage.

This is the first election in modern history where the Electoral College actually gives an advantage toward the Democrats.

That said, I think the President will comfortably win the popular vote and easily win the electoral vote.
08:31 PM on 08/29/2012
DO NOT BELIEVE THE POLLS!!!!
It doesn't matter what the polls say. The important thing is for all Democrats, Independents, Progressives, Undecideds, and Reformed GOPTers must get out the vote for...........

OBAMA & STATE & LOCAL DEMOCRATS 2012
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10:39 PM on 08/29/2012
excellent point....
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04:18 AM on 08/30/2012
And carefully talk to friends, neighbors....if rational sane people who
are against
yet
ANOTHER NEOCON WAR $$$$$.....election corruption and suppression....
Wall St. Crooks....etc.....then
get them to register, vote as soon as possible....and talk to other...MULTIPLY !

And folks....it takes money too.....a bit now....or
thousands per family for more war's !
MrStat1
I believe in the rule of law
04:07 PM on 08/30/2012
Sorry. I'm voting Romeny and millions like me will do the same. We don't believe in big government and high taxes. We believe in less gov't, less taxes and more states rights.
07:48 PM on 08/30/2012
Good for you.
 
OBAMA 2012!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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dino139
11:54 PM on 08/30/2012
Right, You beleive in having a huge military and constant wars and borrowing money from China to pay for it.
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Ryan Kenneth Leddy
Facts have a liberal bias.
07:11 PM on 08/29/2012
One thing I think people overlook is that Obama was elected with 365 electoral votes in 2008, which is a 95 electoral vote cushion. Obviously, he isn't going to take Indiana this time around, and carrying North Carolina again would be a huge shocker. However, take that away and Obama is still winning 332 to 206.

Out of the remaining swing states, I would say Obama's grasp on Iowa and Colorado are the weakest. Take those two away and give it to Romney and Obama is still winning by 317 to 221. There are now only two questionable states remaining for Obama...Virginia and Florida. However, he can still lose BOTH and win the election 275 to 263.

However, I doubt all of those scenarios happening. I have Obama losing in Florida, but taking Virginia, Colorado, and Iowa, meaning Obama wins 303 to 235.

The election will come down to one simple fact....People like the President. He's charismatic, yet still has people's best interest at heart. Romney, on the other hand, is awkward, gaffe-prone, and he's been on the defensive for literally this ENTIRE campaign all because he wont release his tax returns and claims that his experience working in the Private Sector makes him qualified to turn around the economy yet at the same time he wont let anyone ask about his time at Bain.
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Kandis SupaStar Hill
There is no such thing as two sets of facts
12:16 AM on 08/30/2012
Wow, your post has more clarity and is more understandable than the article... Nice!
12:54 AM on 08/30/2012
What a great analysis - The powers to be should look at deductions from the 2008. Talking about the two candidates, I think the differences will become apparent in the debates.

I live in Fort Collins, CO, and Obama visited here yesterday. I was fortunate enough to be nominated to have my picture taken with the president, and let me tell you that this man lights up the room when he walks in. Talking to him one-on-one, I realize that he is able to make every person he meets feel special. This man could win on charisma alone. Then he went out and pumped up the students at CSU, and had the biggest rally of his re-election campaign so far.

When I watch Romney, I see an uneasy man trying hard to connect with the average person, and then making the most awful blunders. I have watched him carefully through the very few interviews he has done. He will have these very quick in-breaths when he is either totally uncomfortable, lying or trying to get out of the questions posed to him.

David Brooks, who is (was?) a conservative commentator, has this funny Op-Ed that has run in many papers in various forms today. One of the links is: www.post-gazette.com/stories/opinion/perspectives. I am not sure why this link doens't light up so you can click on it, but trust me, it is worth hunting down. It is a hoot.
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dino139
11:57 PM on 08/30/2012
Read that Brooks piece in the Times. Very funny. Couldn't believe Brooks wrote it, had to check the header to be sure.
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Rightbrainedleftwinged
GOP Motto: If you can't beat em cheat em.
06:41 PM on 08/29/2012
Wiscochsin is the state where the GOP needs to be destroyed. Democrats will be out for a vengeance in the upcoming years, because they know that the state is not really a ultra conservative state, and has been going through a phase, where some impressionable voter have been leaning to the right. Sometimes it takes more than 2 years of a regime, before enough of the population sees it's true colors. Ryan, Preibus, Scott Walker, and some of the other lesser known figures in that state like Ron Johnson, are all part of the machine.
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TommyObama
Abuse of power comes as no surprise.
12:22 AM on 08/30/2012
I like to think that my beloved AZ (no really...I still love it, even after this hot mess) is emerging from a similar "phase". Yesterday's vote might indicate that cooler heads are prevailing here. Russell Pearce and Ben Quayle -- get outta the pool, both of you!
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Lou on Vancouver Island
Allin, Lou: Mystery Author
12:40 PM on 08/30/2012
For sure when even Brewer endorses the Pres. Loved it! ;-))
05:14 PM on 08/29/2012
i think the numbers for oklahoma are flipped