If at least two or more conservatives cast votes for canidates in different parties, then the conservative vote has been splintered. You don't think so?
Just take a look at the results of the 2000 presidential election. The leading third party candidates for conservatives were Pat Buchanan, Harry Browne, and Howard Phillips. The leading third party candidate on the left was Ralph Nader. He received more than twice the total votes of Buchanan, Browne, and Phillips combined. Bush owes his presidency to third parties. If it wasn't for Ralph Nader, Gore would be in the White House.
The real battle is not fought in the political arena. Modern conservatives seem to have this strange notion that they can only make progress by getting elected and packing the Supreme Court. They tend to forget that the people are the ones who have the power. If as much energy was spent educating people on true conservative principles as is spent on getting liberal Republicans elected, you will see some real change.