| Election Name: | 2024 Illinois Democratic presidential primary |
| Country: | Illinois |
| Type: | primary |
| Ongoing: | yes |
| Previous Election: | 2020 Illinois Democratic presidential primary |
| Previous Year: | 2020 |
| Outgoing Members: | AZ |
| Election Date: | March 19, 2024 |
| Elected Members: | KS |
| Next Election: | 2028 Illinois Democratic presidential primary |
| Next Year: | 2028 |
| Votes For Election: | 174 delegates (147 pledged and 27 unpledged) to the Democratic National Convention |
| Image1: | File:Joe Biden presidential portrait (cropped).jpg |
| Candidate1: | Joe Biden |
| Color1: | 224192 |
| Home State1: | Delaware |
| Popular Vote1: | 739,646 |
| Percentage1: | 91.5% |
| Delegate Count1: | 147 |
| Color2: | e05a9d |
| Home State2: | Washington, D.C. |
| Popular Vote2: | 28,777 |
| Percentage2: | 3.6% |
| Delegate Count2: | 0 |
| Map Size: | 170px |
The 2024 Illinois Democratic presidential primary took place on March 19, 2024, as part of the Democratic Party primaries for the 2024 presidential election. 174 delegates to the Democratic National Convention will be allocated to presidential candidates.[1] The contest was held alongside Arizona, Kansas, and Ohio.
President Biden won in a landslide, receiving more than 80% of the vote in every county.[2]
The petition circulation period for a candidate to place their name on the ballot began October 7, 2023, and ended January 5, 2024. To be placed on the ballot, each candidate needed no less than 3,000 and no more than 5,000 signatures statewide.
During the January 4, 2024, to January 5, 2024, filing period, four candidates filed to run in the Democratic primary.[3] Unlike other states, individual delegates are elected directly by voters with a number of at-large delegates awarded to the statewide winner.[4]
As only the Biden campaign submitted delegates, Biden will win these delegates by default.[5]
| Poll source | Date(s) administered | Sample size | Margin | Joe Biden | Robert F. Kennedy Jr. | Marianne Williamson | Other / Undecided | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| style=border-right-style:hidden | style=border-right-style:hidden | March 6, 2024 | Phillips suspends his candidacy | ||||||||
| style=border-right-style:hidden | style=border-right-style:hidden | February 28, 2024 | Williamson re-launches her candidacy | ||||||||
| style=border-right-style:hidden | style=border-right-style:hidden | February 7, 2024 | Williamson suspends her candidacy | ||||||||
| style=border-right-style:hidden | style=border-right-style:hidden | October 27, 2023 | Phillips announces his candidacy | ||||||||
| style=border-right-style:hidden | style=border-right-style:hidden | October 9, 2023 | Kennedy withdraws from the primaries | ||||||||
| Cor Strategies[6] | Aug 24–27, 2023 | – (RV) | – | 81% | 6% | 2% | 11% | ||||