| − | During the early stages of the 2020 presidential campaign, former Vice-President [[Joe Biden]] dominated the polling for the Iowa caucus, averaging 20-30% of the vote. Beginning in August 2019, the situation became more fluid, with Biden, [[Elizabeth Warren]], [[Pete Buttigieg]], and [[Bernie Sanders]] all dominating the field at different times. In the latest poll by YouGov and CBS News, covering the period January 22-31, 2020, Biden and Sanders were tied with 25% of the vote each.<ref>https://www.cbsnews.com/news/election-2020-battleground-tracker-what-could-happen-in-iowa-monday-2020-02-02/</ref> | + | During the early stages of the 2020 presidential campaign, former Vice-President [[Joe Biden]] dominated the polling for the Iowa caucus, averaging 20-30% of the vote. Beginning in August 2019, the situation became more fluid, with Biden, [[Elizabeth Warren]], [[Pete Buttigieg]], and [[Bernie Sanders]] all dominating the field at different times. The latest polls have indicated significant movement in Sanders' direction: a YouGov and CBS News poll covering the period January 22-31, 2020, had him and Biden tied with 25% of the vote each,<ref>https://www.cbsnews.com/news/election-2020-battleground-tracker-what-could-happen-in-iowa-monday-2020-02-02/</ref> while an Emerson College poll released on February 2 gave the [[socialist]] senator a seven-point lead over Biden.<ref>https://www.newsweek.com/bernie-sanders-leads-iowa-7-points-poll-released-eve-caucus-night-1485330</ref> |
| | The most recent poll aggregators have suggested a lead for Sanders, with 22-24%, followed closely by Biden and then by Buttigieg and Warren. | | The most recent poll aggregators have suggested a lead for Sanders, with 22-24%, followed closely by Biden and then by Buttigieg and Warren. |