Poll: Santorum Crushing Romney In Michigan: New PPP Poll Shows Santorum up 15 percent in Romney's home state The wave of momentum Rick Santorum is riding after his victories in Colorado, Minnesotta, and Missouri last week is carrying him into Michigan. Public Policy Polling released a poll Monday showing Santorum is leading in the Great Lakes State, which is set to hold its primary on Feb. 28. In the new poll, Santorum is up 15 points on Mitt Romney, with 39 percent of those polled saying they would vote for the former Pennsylvania Senator while 24 percent support Romney. Ron...