The 2004 Iowa Democratic presidential caucuses were an election held on January 19 as part of the United States presidential primary. They were the first major test of some of the leading contenders for the Democratic Party's nomination as its candidate for the 2004 United States presidential election.

The 2004 United States presidential election was the 55th quadrennial presidential election, held on Tuesday, November 2, 2004. The Republican ticket of incumbent President George W. Bush and his running mate incumbent Vice President Dick Cheney were elected to a second term, defeating the Democratic ticket of John Kerry, a United States senator from Massachusetts and his running mate John Edwards, a United States senator from North Carolina.