Poll: Trump leads top 2020 Democrats in Wisconsin

President TrumpDonald John TrumpSanders apologizes to Biden for supporter's op-ed Jayapal: 'We will end up with another Trump' if the US doesn't elect progressive Democrats: McConnell impeachment trial rules a 'cover up,' 'national disgrace' MORE leads top 2020 Democratic White House hopefuls in theoretical match-ups in Wisconsin, a poll released Wednesday found.

Former Vice President Joe BidenJoe BidenSanders apologizes to Biden for supporter's op-ed Jayapal: 'We will end up with another Trump' if the US doesn't elect progressive White House appoints GOP House members to advise Trump's impeachment team MORE, Sens. Bernie SandersBernie SandersSanders apologizes to Biden for supporter's op-ed Jayapal: 'We will end up with another Trump' if the US doesn't elect progressive Former health insurance executive: Current system is bankrupting country MORE (I-Vt.) and Elizabeth WarrenElizabeth Ann WarrenJayapal: 'We will end up with another Trump' if the US doesn't elect progressive Former health insurance executive: Current system is bankrupting country The American disease and death bowls MORE (D-Mass.), and South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegJayapal: 'We will end up with another Trump' if the US doesn't elect progressive Former health insurance executive: Current system is bankrupting country Biden leads Democratic primary field in Iowa: poll MORE all trail Trump in Wisconsin, according to the new Marquette Law School poll. Last month, all of these candidates except Buttigieg beat Trump.

Trump topped Biden, 47 percent to 44 percent, in the new poll.

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Trump also holds a 3-point edge over Sanders in Wisconsin, 48 percent to 45 percent. 

Trump's lead is wider against Warren, at 48 percent to 43 percent, and Buttigieg, at 47 percent to 39 percent, pollsters found. 

The results come as the House impeachment inquiry against Trump unfolds. Democrats launched the inquiry in September after a whistleblower reported Trump asked the Ukrainian president to look into Biden and his son. 

Trump won Wisconsin, along with Michigan and Pennsylvania, in the 2016 election, allowing him take the White House.   The Democratic Party is aiming to win these battleground states back in 2020. 

The new poll surveyed 801 registered voters in Wisconsin Nov. 13-17 and had a margin of error of 4.1 percentage points.