Super Tuesday is underway as 10 states hold primary or caucus contests in the Republican primary race.
Voters are casting ballots in Alaska, Georgia, Idaho, Massachusetts, North Dakota, Ohio, Oklahoma, Tennessee, Vermont and Virginia.
HuffPost's Mark Blumenthal reports on the latest polls out in what are perhaps the most critical contests:
Two final polls from CNN and Time in Ohio and Georgia provide political junkies with more to chew on, but largely confirming what other surveys have been telling us: Ohio remains a very close contest between Mitt Romney and Rick Santorum, while Newt Gingrich appears poised to win his home state of Georgia by a wide margin.
Meanwhile, the last two automated polls in Tennessee both show support for Gingrich rising while Santorum's margin against Romney shrinks, setting up the possibility of a close three-way finish in that state.
From delegates to endorsements, click here for a rundown on who's ahead in the Republican race.
Check out the live blog below for the latest Super Tuesday developments.