Poll: Sanders leads Biden by 9 points in Iowa

Poll: Sanders leads Biden by 9 points in Iowa
© Getty Images

Sen. Bernie SandersBernie SandersBiden leads Sanders by single digits in South Carolina: poll Pro-Trump super PAC hits Biden with new Spanish-language ad in Nevada Biden will go after Bloomberg, Sanders at Las Vegas debate, aides say MORE (I-Vt.) holds a commanding lead over the Democratic field in Iowa just days before the state is set to hold its first-in-the-nation caucuses, according to a new poll.

An Emerson College poll released Sunday evening of registered Democrats and left-leaning independents found Sanders in the lead with 30 percent of respondents planning to support him in the caucuses, while former Vice President Joe BidenJoe BidenBiden leads Sanders by single digits in South Carolina: poll Pro-Trump super PAC hits Biden with new Spanish-language ad in Nevada Biden will go after Bloomberg, Sanders at Las Vegas debate, aides say MORE (D) followed with 21 percent.

Sen. Elizabeth WarrenElizabeth Ann WarrenBiden leads Sanders by single digits in South Carolina: poll 2020 Democratic candidates support Las Vegas casino workers on debate day Sanders takes lead in new Hill/HarrisX poll MORE (D-Mass.) has sunk to fourth place in the poll behind Sen. Amy KlobucharAmy Jean Klobuchar2020 Democratic candidates support Las Vegas casino workers on debate day Democratic senators ask DOJ watchdog to expand Giuliani probe What to watch in the debate tonight MORE (D-Minn.) at 11 percent and 13 percent, respectively, while former South Bend, Ind., Mayor Pete ButtigiegPeter (Pete) Paul ButtigiegBiden leads Sanders by single digits in South Carolina: poll 2020 Democratic candidates support Las Vegas casino workers on debate day What to watch in the debate tonight MORE rounded out the top tier in fifth place with 10 percent.

No other candidate registered above 5 percent support in the poll. Sanders's dominance in the poll comes after a USA Today/Suffolk University poll released earlier in the day showed Biden with a slight lead over Sanders in the state.

The Emerson College poll surveyed 450 Democrats and independents in Iowa via landlines and online polling, and has a margin of error of 4.6 percentage points.