An AtlasIntel national poll released on the day of the Iowa caucuses shows Bernie Sanders with a national lead of four points.
Overall, 28 percent responds said Sanders was their first choice, while 24 percent said the same for Joe Biden. Elizabeth Warren and Michael Bloomberg are in a stastical tie for third place, with 11 percent and 9 percent respectively.
Sanders far outperformed his Democratic opponents in the 18-34 age group, winning 57 percent of the vote with that demographic. No other candidate registered double-digit support with the group.
In a hypothetical general election matchup with Donald Trump, Bernie Sanders performs best against the president, with a three point lead. The survey shows all other candidates in the race trailing or tied with Trump.
The survey was conducted between January 30 and February 2.