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Iowa is changing its caucus rules. Here’s what’s changed in 2020

Adam Levy
By Adam Levy, CNN
Updated 8:14 PM EST, Mon February 3, 2020
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OTTUMWA, IOWA - DECEMBER 21: Guests listen as Democratic presidential candidate former vice president Joe Biden speaks during a campaign stop at the Hotel Ottumwa on December 21, 2019 in Ottumwa, Iowa. The 2020 Iowa Democratic caucuses will take place on February 3, 2020, making it the first nominating contest for the Democratic Party in choosing their presidential candidate to face Donald Trump in the 2020 election. (Photo by Scott Olson/Getty Images)
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OTTUMWA, IOWA - DECEMBER 21: Guests listen as Democratic presidential candidate former vice president Joe Biden speaks during a campaign stop at the Hotel Ottumwa on December 21, 2019 in Ottumwa, Iowa. The 2020 Iowa Democratic caucuses will take place on February 3, 2020, making it the first nominating contest for the Democratic Party in choosing their presidential candidate to face Donald Trump in the 2020 election. (Photo by Scott Olson/Getty Images)
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DES MOINES, IA - FEBRUARY 03: Officials from the 68th caucus precinct overlook the results of the first referendum count during a caucus event on February 3, 2020 at Drake University in Des Moines, Iowa, United States. Iowa is the first contest in the 2020 presidential nominating process with the candidates then moving on to New Hampshire. (Photo by Tom Brenner/Getty Images)
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DES MOINES, IOWA - FEBRUARY 03:  Democratic presidential candidate Sen. Amy Klobuchar (D-MN) addresses supporters, as her husband John Bessler (L)  looks on, at her caucus night watch party before results come in on February 03, 2020 in Des Moines, Iowa.  Iowa democratic party officials are delaying the results as they do "quality control checks."   Iowa is the first contest in the 2020 presidential nominating process with the candidates then moving on to New Hampshire.    (Photo by Scott Olson/Getty Images)
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Democratic presidential candidate Sen. Bernie Sanders, I-Vt., with his wife Jane O'Meara Sanders, speaks to supporters at a caucus night campaign rally in Des Moines, Iowa, Monday, Feb. 3, 2020. (AP Photo/Pablo Martinez Monsivais)
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