Sen. Debbie Stabenow (D-Mich.) leads her most likely Republican opponent, former Rep. Pete Hoekstra (Mich.), 47 percent to 38 percent, according to a new poll conducted by the Lansing, Mich.-based pollster EPIC-MRA.

But while Stabenow has the advantage at this point, her job approval numbers indicate she could be vulnerable. Just 38 percent of voters think she has done an excellent or pretty good job, while 29 percent evaluate her job performance as just fair and 25 percent describe it as poor.

Voters still like her personally, however: Forty-seven percent of voters have a positive opinion of her, with 38 percent holding a negative impression.

Hoekstra is the leading Republican candidate in the race, although Detroit charter school co-founder Clark Durant also joined the race last week and could run a competitive campaign.

The poll of 600 likely voters was conducted Aug. 13-16, with a margin of error of plus or minus 4 percentage points.