AP

Republican presidential candidate Ron Paul is planning four campaigns stops before Tuesday's primary, hoping to boost his Michigan chances to better than third place.
An NBC News/Marist Poll released Wednesday showed 37 percent of 1,147 likely Michigan GOP primary voters backed Mitt Romney, 35 percent backed Rick Santorum and 13 percent favored Paul. Eight percent supported Newt Gingrich and 4 percent were undecided.
The telephone poll was conducted Sunday-Monday and had a margin of error of plus or minus 2.9 percentage points.
Paul plans a "Soldiers, Airmen and Sailors" event Saturday at Central Michigan University and speaks Sunday to small business owners in Hudsonville.
On Monday, the Texas congressman plans an afternoon rally with Michigan State University students in East Lansing and an evening rally with doctors in Dearborn.