Obama takes 47.7 percent support over Romney at 45 in the survey. Obama's lead in the same poll was 6.7 points earlier this month.

Although polling has been sparse — many considered Michigan an Obama stronghold — those numbers are in line with the RealClearPolitics average of polls, where Obama leads 49-46.

“Mitt Romney's numbers … are where they would need to be if he hopes to pull off an upset next week," Richard Czuba of Glengariff Group Inc., which conducted the poll, told the Detroit News. "But the question is: Is there enough for a final push?”

The Obama campaign has invested in network television ads ahead of Election Day. The Romney campaign has not, although Republican super-PACs are filling the void.

Both campaigns are expected to send surrogates to the Wolverine State in the final days before the election.

Voters in the state give Romney higher marks on the economy, with 47 percent saying he would do a better job, to 44 for Obama.

On foreign affairs, 50 percent back Obama, to 42 percent for Romney. 

The poll was conducted from Oct. 27-29 and has a 4-point margin of error.