But as the front-runner trying to hold on to the lead as retired neurosurgeon Ben Carson's numbers grow, it's difficult to see how Trump wasn't at least partially wounded by Thursday's performance.
Just look at the shameful way that MSNBC commentator Toure Neblett recently lit into Dr. BenCarson, a pediatric neurosurgeon and black conservative who has been critical of President Barack Obama.
There had always been hope in the Walker campaign that Trump supporters were not active caucus-goers, the source said, but it was hard to fight the popularity of both front-runner Trump and BenCarson.
Whether this weekend finds you blowing two feet of snow off the driveway or counting the hours until "Downton Abbey, " make time to watch the video of Dr. BenCarson speaking to the White House prayer breakfast this week.
Bush is "now tacking hard to the right, " the group said in an email blast to reporters, and described the comment as an effort to mimic inflammatory language about minorities by other Republican presidential candidates, like GOP front-runner Donald Trump and retired neurosurgeon BenCarson.