There are three primaries or caucuses tonight — the first multi-state election day of the 2012 primary.

While no delegates will actually be awarded tonight, these races still matter. Former Pennsylvania senator Rick Santorum is making a play to be the new “conservative alternative” to former Massachusetts governor Mitt Romney. Former House speaker Newt Gingrich is hoping to get some good news after a losing streak. Texas Rep. Ron Paul is trying to prove that his caucus-based strategy has any viability.

LOVELAND, Colo. – Bracing for defeat in one or more of Tuesday’s three primaries and caucuses, Mitt Romney’s campaign released a strategy memorandum Tuesday morning touting the former Massachusetts governor’s financial and organizational advantage over the long haul.

Former senator Bob Kerrey told The Fix on Tuesday that he will not run for the open Senate seat in Nebraska, a move that robs Democrats of their top potential recruit in a tough state.

Democrats eyed a potential Senate comeback for Kerrey after Sen. Ben Nelson (D-Neb.) announced in late December that he wouldn’t seek reelection.

President Obama’s campaign announced late Monday that it will embrace the top super PAC supporting Obama’s reelection campaign, in what amounts to the latest example of the president embracing political pragmatism over principle.

You might want to pick your comfiest chair. Last week, former Cuban President Fidel Castro unveiled his new memoir, “Time Guerrilla,” a 1,000-plus page, two-volume set based on conversations with journalist Katiuska Blanco. Oh, and it stops just as his revolution really gets rolling, in 1959.