Mitt Romney has officially quit the race, and basically conceded the GOP nomination to McCain. He announced it during a red-meat speech at CPAC. Laura Ingraham introduces him, but not before she basically rips into McCain. Romney basically said that he would've pressed on to the convention (a la Reagan in 1976), but he wants the GOP united against the Democrats. (He actually said it a bit differently than that, but you get the idea).
The word on the street is that he's going to pull a Reagan circa 1976, and try and set himself up for 2012, as the "true conservative." Maybe this is why he has said he's "suspending" his campaign, as opposed to ending it outright. Who knows.