I don't believe that you phrased your statement quite right. Romney won't split the vote, Conservatives will split the vote. Romney was the GOP's best choice in the previous race. But, many conservatives could not get past the fact that he is a Morman. So, instead, they chose a worn-out old RHINO, aka John McCain. The conservatives (of which I am one, just not one of the stupid one’s)did themselves in this past go around. Think they will ever learn? Maybe, but don't get your hopes up...
Romney ranked about the same as McCain in the last election as far as how bad of a choice they were. Many Conservatives could not get past the fact that Romney was a Liberal trying to sound conservative. Yes, his religion did not help him either with some. Someone that was for the bail-out bunk and would consult with his lawyers before a military response to an attack, among many other problems, is not a Conservative.