With four weeks of campaigning left before the Democratic Party’s first presidential nominating contest in Iowa, former Vice President Joe Biden appears best positioned to defeat President Donald Trump.

A new Morning Consult poll, conducted Dec. 30 through Jan. 5, found Biden leads Trump 46 percent to 40 percent in a hypothetical matchup, the widest margin recorded among the top five contenders for the party’s nomination. Another 14 percent said they didn’t know or had no opinion, showing the room for movement for either candidate 10 months out from the general election.

Sen. Bernie Sanders (I-Vt.) and billionaire Michael Bloomberg led Trump by 2 points, while Pete Buttigieg of Indiana led the Republican incumbent by 1 point and Sen. Elizabeth Warren (D-Mass.) trailed by 1 point.

The head-to-head matchups polled between 8,242 and 8,574 registered voters, with a 1-point margin of error.