By design of the GOP Elites.
Just like 2008.
You’ll vote for Romney or you will get another 4 years of Obama.
The GOP Elites are more than satisfied with the status quo. They would be content with another 4 of Obama, in exchange for a possible Senate majority and retaining the House.
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None of the other wannabes seem to be able to maintain enough momentum to even mount a serious challenge for more than a couple of weeks. The GOP candidate leadership status has changed frequently, and still seems to be in flux.
Barring some signficant upsets, once the actual primary voting starts, the GOP Elites’ preference will get the nomination. But, as in 2008, several ‘conservatives’ will split that segment of the vote, so none will probably present a serious challenge.
That is the way things have been engineered to work... ask rove.
LLS