Sunday show preview: 2012 race, Iran plot, a Furious investigation

This weekend's talk shows are splitting time between the 2012 presidential race, Iran's alleged involvement in an assassination plot on U.S. soil and the investigation into the botched gun-running operation known as Fast and Furious.

Adviser David Axelrod will represent President Obama's reelection team on ABC's "This Week" while some of the Republicans vying to knock Obama out of the White House take to the airwaves elsewhere.

Herman Cain, who is the GOP front-runner in recent polls, will be on NBC's "Meet the Press." He'll be followed by two high-profile surrogates for other top-tier candidates: Former Gov. Tim Pawlenty (R-Minn.) will speak for Mitt Romney and Gov. Bobby Jindal (R-La.) for Rick Perry.

Former House Speaker Newt Gingrich (R-Ga.) will take his campaign to CNN's "State of the Union" and will be followed by Rep. Debbie Wasserman Schultz, the chairwoman of Democratic National Committee.

CNN will also host Sen. John McCainJohn Sidney McCainSenate's defense authorization would set cyber doctrine Senate Dems hold floor talk-a-thon against latest ObamaCare repeal bill Overnight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions MORE (R-Ariz.) to talk about the plot to assassinate the Saudi ambassador in Washington, which was uncovered by U.S. officials. Elements of the Iranian government are accused of backing the operation, and that is stirring the debate over U.S. foreign policy.

Dianne FeinsteinDianne Emiel FeinsteinDems call for action against Cassidy-Graham ObamaCare repeal Feinstein pushes back on Trump’s N. Korea policy Feinstein on reelection bid: ‘We will see’ MORE (D-Calif.), the chairwoman of the Senate Intelligence Committee, will be on "Fox News Sunday" to talk about the foiled assassination attempt.

Fox kicks off with House Majority Leader Eric CantorEric CantorEric Cantor offering advice to end ‘immigration wars’ Trump's olive branch differs from the golden eras of bipartisanship After divisive rally, Trump calls for unity MORE (R-Va.).

CBS's "Face the Nation" take a different tack by talking to the top members of the House Oversight and Government Reform Committee: Chairman Darrell Issa (R-Calif.) and Ranking Member Elijah Cummings (D-Md.). The topic will be the investigation into the botched Bureau of Alcohol, Tobacco and Firearms operation called Fast and Furious.