Obama leads Romney 48 to 42 percent, according to the poll. Obama held a 50 to 42 lead over Romney in the same poll from June, but Romney has been steadily closing the gap since becoming the presumptive Republican nominee.
According to the Real Clear Politics average of polls, Obama holds a 1.5 percent lead over Romney in the Wolverine State.
Obama once had a commanding lead over Romney in Michigan, up by double digits as recently as mid-May, according to the Real Clear Politics average of polls.
Romney’s father, George Romney, was once governor of Michigan, and Romney spent his childhood there. Still, many didn’t believe the former Massachusetts governor would devote significant resources to a state that until recently looked to be out of reach.
Obama won the state by 16 points in 2008, while Romney barely won its Republican primary earlier this year. Romney edged competitor Rick Santorum by 3 percent in the primary, but effectively split the delegate count with him. At the time, many called it a blown opportunity for the former Pennsylvania senator, who got wrapped up in controversial social issues just prior to the primary.
The Rasmussen survey of 500 likely voters has a 4.5 percent point margin of error.