For Chicago-area conservatives, the hottest happening in town this weekend likely isn't the Chicago Blues Festival or even the ever-popular Ribfest.

Rather, it's the second annual CPAC Chicago, with its packed lineup of former GOP presidential candidates and other conservative lawmakers, that will likely drive Republican voters to the Donald E. Stephens Convention Center in Rosemont.

Sponsored by the American Conservative Union, the Conservative Political Action Conference's one-day conference aims to "take the fight for the future of America directly to President Barack Obama’s backyard."

Among the lineup of speakers at the first of two CPAC regional meetups are U.S. Rep. Michele Bachmann, Herman Cain and Rick Santorum; GOP governors including Chris Christie and John Kasich; plus Illinois' own U.S. Reps. Joe Walsh and Randy Hultgren.

(Scroll down to check out more of the conference's speaker lineup.)

According to the Associated Press, possible running mates for GOP presidential candidate Mitt Romney are also expected to address the crowd at the conference.

Among the topics speakers are slated to address, according to the conference's program [PDF], include "President Obama’s Fast and Furious Disregard for Rule of Law," "Voter Fraud: Obama’s Ties to Election Fraud" and "Waking Goliath: The Midwest Stands Up to Union Special Interests."

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  • Michele Bachmann

    FILE - In this Dec. 19, 2011, file photo then Republican presidential hopeful U.S. Rep. Michele Bachmann, R-Minn., leaves a campaign stop in Hampton, Iowa. The Minnesota Congresswoman, plans to seek re-election following her unsuccessful run for the Republican presidential nomination. Bachmann was recently granted citizenship in Switzerland, according to her spokeswoman. (AP Photo/Charlie Neibergall)

  • Rick Santorum

    FILE - In this April 2, 2012, file photo, then Republican presidential candidate former Pennsylvania Sen. Rick Santorum speaks in Shawano, Wis. Some of Mitt Romney's former foes have yet to endorse him as the Republicans' presidential nominee. Santorum campaigned hard against Romney and the health care overhaul he signed into law as Massachusetts governor. Conservatives cast it as a precursor to Democrats' national plan and Romney has vowed to repeal it. Santorum advisers say he will not back Romney until he is convinced that Romney is committed to upending it, as well as ensuring conservatives' views are represented in the party's platform and in Romney's campaign. (AP Photo/Jae C. Hong, File)

  • Herman Cain

    Former Republican presidential candidate Herman Cain speaks during the annual Tax Cut Rally, sponsored by the Taxpayers League of Minnesota, at the Minnesota State Capitol, Saturday, April 28, 2012, in St. Paul, Minn. (AP Photo/Genevieve Ross)

  • Chris Christie

    New Jersey Gov. Chris Christie says in Trenton, N.J., Thursday, May 31, 2012, that he will not nominate a Democrat after they rejected his nomination of a gay black Republican mayor to the state Supreme Court. Morris County Mayor Bruce Harris was turned down by a vote of 7 to 6 after a four-hour hearing. It's the same margin by which another Christie nominee, First Assistant Attorney General Phillip Kwon, was voted down two months ago. (AP Photo/Mel Evans)

  • John Kasich

    Ohio Gov. John Kasich delivers his State of the State address at Wells Academy/Steubenville High School Tuesday, Feb. 7, 2012, in Steubenville, Ohio. The first-term Republican made his plea for legislators to put politics aside and focus on what's good for Ohio in his State of the State address Tuesday in Steubenville, Ohio. (AP Photo/Tony Dejak)

  • Bobby Jindal

    Louisiana Gov. Bobby Jindal speaks at a fundraising dinner for the Mobile GOP Thursday May 10, 2012 at USS Alabama Battleship Park in Mobile, Ala.. (AP Photo/Press-Register, Victor Calhoun) MAGS OUT

  • Rand Paul

    FILE - In this Jan. 7, 2012 file photo, Sen. Rand Paul, R-Ky., son of Republican presidential candidate, Rep. Ron Paul, R-Texas, campaigns for his father at Windham High School in Windham, N.H. Paul says he was stopped briefly by security at the Nashville airport, Monday, Jan. 23, 2012, when a scanner found an "anomaly" on his knee. (AP Photo/Charles Dharapak, File)

  • Grover Norquist

    Anti-tax activist Grover Norquist, president of Americans for Tax Reform, addresses America's political right at the Conservative Political Action Conference (CPAC) in Washington, Saturday, Feb. 11, 2012. (AP Photo/J. Scott Applewhite)

  • Joe Walsh

    FILE - In this July 27, 2011 file photo, Rep. Joe Walsh, R-Ill. addresses a Tea Party rally on Capitol Hill in Washington. On Wednesday, Sept. 21, 2011, Walsh announced in an email to supporters that he is running in the newly drawn 14th congressional district in suburban areas north and west of Chicago. That will force a primary battle with fellow conservative Republican Randy Hultgren if Illinois' new congressional map survives a court challenge. (AP Photo/Harry Hamburg, File)

  • Ron Johnson

    Sens. Ron Johnson, R-Wis., center, with Rep. Vern Buchanan, R-Fla., and Sen. John Boozman, R-Ark., right, speaks during a news conference demanding that the Joint Select Committee on Deficit Reduction opens the entirety of its proceedings to the public, on Capitol Hill in Washington, Thursday, Sept. 8, 2011. (AP Photo/Manuel Balce Ceneta)

  • Sam Brownback

    Kansas Gov. Sam Brownback discusses the state's potential for developing wind farms, during a news conference, Wednesday, Feb. 15, 2012, at the Statehouse, in Topeka, Kan. The model turbine in the background was powered by the building's electricity. (AP Photo/John Milburn)

  • Bob McDonnell

    FILE - In this Feb. 26, 2012 file photo, Virginia Gov. Bob McDonnell speaks in Washington. If you hope to be president someday, taking the second spot on a ticket is a pretty good deal if that ticket wins. It's a possible path to obscurity if the ticket loses. ( AP Photo/Jose Luis Magana, File)