Santorum captures Tea Party, Evangelical, and 'Very Conservative' constituencies that previously supported Gingrich

Public Policy Polling:

Rick Santorum could be headed for a big day in today's contests in Colorado, Minnesota, and Missouri. Missouri looks like a probable win for Santorum. He's at 45% there to 32% for Mitt Romney and 19% for Paul. Minnesota provides an opportunity for a win as well. Currently he has a small advantage with 33% to 24% for Romney, 22% for Newt Gingrich, and 20% for Ron Paul. And Santorum should get a second place finish in Colorado, where Romney appears to be the likely winner. The standings there are Romney at 37%, Santorum at 27%, Gingrich at 21%, and Paul at 13%.

And:

There are three groups Santorum's winning in all three of these states: Tea Partiers, Evangelicals, and those describing themselves as 'very conservative.' Those were groups that had previously been in Gingrich's column, but it appears right leaning Republican voters are shifting toward Santorum as their primary alternative to Romney. If Santorum does pick up 2 wins and a 2nd place finish tomorrow that trend is likely to be accelerated.