No reason to drop. None of the other candidates has a majority.
Go no clear front runner!
Go brokered convention!
Discard the four jokers and draw a new hand.
Pulling out my crystal ball, I think what’s shaping up is that Huckabee will pick up some delegates in AL and GA and MS, but not enough to keep going, since none is winner take all and he’s out of money. He will throw his support to McCain in exchange for a Veep spot (they’ve been playing kissy face huggy bear for a while now) and they will likely have enough delegates to win the nomination, even though Romney will win more delegates outright than McCain. Then we have, God help us all, a McCain/Huckabee ticket to go up against Her Highness and probably Richardson as Veep to win New Mexico and the hispanic vote.
Better luck to the Republicans in 2012, because there is no way on God’s green earth that a ticket that weak wins against the Clinton/Dem machine. Not with Bush fatigue, an unpopular war and a weakening economy.
I like your thinking.