Some of the Democratic presidential candidates stand on the stage at one of the debate [File: Mike Blake/Reuters]

The United States is less than three months out from the Iowa caucus, the kick-off event for the 2020 presidential primary and caucus voting season. 

After Iowa, a series of primaries and caucuses will be held, leading up to the Democratic and Republican conventions in which the parties will formally choose their candidates. 

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Until the conventions, at least eight more Democratic debates will be held. After the conventions, at least three presidential debates and one vice presidential debate will take place.  

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As the election season heats up, here’s a guide to the key dates for the 2020 presidential election: 

Key caucuses

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