Michigan Sen. Gary Peters Gary Charles PetersBiden promises Democratic senators help in battleground states Postal service changes delayed 7 percent of nation's first-class mail: Democratic report GOP votes to authorize subpoenas, depositions in Obama-era probe MORE (D) has a slim lead over his Republican challenger John James, according to a new poll.

Peters leads James by about 3.8 points, according to a Glangariff Group survey released Wednesday, within the poll's 4-point margin of error.

Approximately 44 percent of the 600 surveyed likely Michigan voters said they would vote for Peters, compared to nearly 40 percent for James. Another 16 percent said they were undecided.

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Peters is among vulnerable Senate Democrats facing reelection in 2020. He won his race in 2014 to fill a seat vacated by a retiring Democratic senator, but in 2016 the state voted for President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE.

Additionally, James outraised Peters by roughly $1 million in the fourth quarter of 2019.

The nonpartisan Cook Political Report rates the race “lean” Democrat.

The poll was conducted between Jan. 3 and Jan. 7. Half of the respondents were contacted by a landline telephones and half were contacted by cellphones.