If you want a deadlocked convention, Romney needs to exit. It is clear that Huckabee and Romney are splitting the conservative vote which gives McCain the edge in a lot of states including Texas. If Huckabee drops out, polls have shown that most of his support would go to McCain sweeping him to victory. If Romney drops out, it is possible that much of his support will vote against McCain. Its unlikely, though not impossible, that Huckabee would pass McCain and win the nomination, but its entirely possible that he would win many of the remaining states and keep McCain from getting the nomination.
Why should we care if Mr "National Smoking Ban moral obligation to take care of illegal immigrants children, the US should apologize to Pakistan for Bhutto getting killed by a Muslim terrorist " Huckabee gets the nomination or if Mr "Close Gitmo, give legal protection to terrorists, hike the Gas Tax $.50 to pay for more bureaucrats to fight the mythical man made global warming, close buddy of Ted Kennedy" McCain wins?
A Liberal is a Liberal no matter what party label you slap on them.