Monday 15 January 2024: Iowa Precinct Caucuses. Hours begin at 7:00p CST (0100 UTC). The caucuses elect unbound delegates to the County Conventions. The date is to be the same as the Republican precinct caucuses.

8 July 2023: The State Central Committee of the Republican Party of Iowa's Central Committee unanimously voted to hold the upcoming presidential caucus on 15 January 2024 from the Republican Party of Iowa.

Iowa registers voters by partisan affiliation, including a No-Party designation. Any Iowan registered as a Democrat is eligible to participate in the first step of the delegate selection process.

Tuesday 5 March 2024: Iowa President Preference Cards (Party run Primary). Delegate Pledging: Proportional Caucus/Convention. Voter Eligibility: Closed Caucus/Convention. The ballots are mailed on 12 January 2024 and voting continues through Tuesday 5 March 2024 (cards must be postmarked by this date).

President Preference Cards (Party run Primary)
Source: Iowa Democratic Party.
Status: Official. Retrieved: Thursday 20 June 2024.
Included in Nationwide vote.

40 of 46 delegates to the Democratic National Convention are pledged to presidential contenders based on the results of the voting in today's Iowa President Preference Poll. A mandatory 15 percent threshold is required in order for a presidential contender to be pledged National Convention delegates at either the congressional district or statewide level. How the Democratic Proportional Delegate Allocation Math works.

• 26 district delegates are to be pledged proportionally to presidential contenders based on the results in each of the State's 4 congressional districts.
• 14 delegates are to be pledged to presidential contenders based on the results statewide.
  • 9 at-large National Convention delegates
  • 5 Pledged PLEOs

President Preference Cards (Party run Primary)
Source: Iowa Democratic Party.
Status: Official. Retrieved: Thursday 20 June 2024.

Saturday 23 March 2024: County Conventions convene in each county to choose Congressional District delegates of which the county is a part as well as the county's delegates the Iowa State Democratic Convention.

Saturday 4 May 2024: District Conventions convene in each congressional district to elect the district's delegates to the Democratic National Convention according to the results of the Presidential Preference Cards. Hours begin at 9:00a CDT (1400 UTC).

Saturday 15 June 2024: The Iowa State Democratic Convention convenes. The State Convention elects the 9 At-Large and 5 PLEO of the Iowa's Pledged delegates to the Democratic National Convention according to the results of the Presidential Preference Cards.

The remaining 6 National Convention delegates consist of

• 6 Unpledged PLEO delegates:
• 6 Democratic National Committee members.
• 0 Members of Congress (0 Senators and 0 Representatives).
• 0 Governors.
• 0 Distinguished Party Leaders.

These 6 delegates and will go to the Democratic National Convention officially "Unpledged".

circa 13 April 2023: New Hampshire Secretary of State David Scanlan has noted that if Iowa decides to use an all-mail caucus he will consider that a "similar election" to New Hampshire's primary and would trigger New Hampshire's law protecting their first presidential primary position. Reference

1 June 2023: Iowa Governor Kim Reynods signed HF 716 which states that voters must be physically present at presidential caucuses. 43.91 "Any person voting at a precinct caucus must be a person who is or will by the date of the next general election become an eligible elector....".

The Iowa Caucuses shall consist of an expression of presidential preference, conducted by mail, AND in-person precinct caucuses. The precinct caucuses will be held in accordance with Iowa Code (ICO 43.4) at least eight days prior to any other state's presidential nominating contest, on the same date as the Republican Caucuses. ... No expression of presidential preference is tabulated at the precinct caucuses. [Delegate Selection Plan from the Iowa Democratic Party, page 1 Section I. B. 1.] [this appears to be a multi-day party-run primary with an as of yet undetermined tabulation date -Ed]