SPONSORED:

Sanders, Biden, maintain lead in Iowa: poll

Former Vice President Joe BidenJoe BidenObama slams Trump in Miami: 'Florida Man wouldn't even do this stuff' Trump makes his case in North Carolina, Ohio and Wisconsin Brad Pitt narrates Biden ad airing during World Series MORE and Sen. Bernie SandersBernie SandersTrump makes his case in North Carolina, Ohio and Wisconsin Trump mocks Joe Biden's drive-in rallies at North Carolina event Sanders hits back at Trump's attack on 'socialized medicine' MORE (I-Vt.) sit atop the Democratic presidential field in Iowa just one day before the first-in-the-nation caucuses, according to a new poll. 

Biden and Sanders are tied at 25 percent as the first choice nominee among likely caucusgoers, according to a CBS News poll conducted by YouGov released Sunday. 

The results largely match the CBS News poll released last week, which showed the two top candidates in the lead in the state, with Sanders holding a slight 1-point lead over Biden, within the poll’s margin of error, at 26 percent to 25 percent. 

ADVERTISEMENT

Former South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegLGBTQ voters must show up at the polls, or risk losing progress Buttigieg says it's time to 'turn the page' on Trump administration Sunday shows preview: Coronavirus cases surge in the Midwest; Trump hits campaign trail after COVID-19 MORE maintained his third place spot at 21 percent, a one point decrease from last week. 

Sen. Elizabeth WarrenElizabeth WarrenWhat do Google, banks and chicken salad have in common? Final debate: War Admiral vs. Seabiscuit Biden defends his health plan from Trump attacks MORE had a one point increase in support, up to 16 percent. 

Sen. Amy KlobucharAmy KlobucharStart focusing on veterans' health before they enlist Durbin says he will run for No. 2 spot if Dems win Senate majority Democrats seem unlikely to move against Feinstein MORE (D-Minn.) had a 2 point decrease, down to 5 percent support. No other candidates registered more than 5 percent. 

Three of the top candidates, Sanders, Warren and Klobuchar, will miss the key event as they’re held up in Washington, D.C., as President TrumpDonald John TrumpObama slams Trump in Miami: 'Florida Man wouldn't even do this stuff' Trump makes his case in North Carolina, Ohio and Wisconsin Pence's chief of staff tests positive for COVID-19 MORE’s Senate impeachment trial presses on. A vote will be held Wednesday and the president will likely be acquitted in the GOP-controlled Senate. 

The poll surveyed 2,500 registered voters in Iowa, including 1,401 self-identified Democrats as well as registered voters who lean Democrat or plan to participate in the Democratic caucus this year. The survey was conducted between Jan. 22 and 31. The margin of error is 3.9 points in Iowa.