A sign that evangelicals are coalescing behind Rick Santorum:

In perhaps the most significant sign that Santorum had arrived as a contender, Texas Governor Rick Perry - the third candidate in the GOP field who has made a special point of attracting evangelicals - launched a negative radio ad against Santorum.

In campaign parlance, Perry's ad - which accused Santorum of backing costly spending projects while in the Senate - was a sign of respect, an acknowledgement that Santorum had broken from the back of the pack of Republican contenders. -- Reuters