DES MOINES, Iowa —

Iowa Republican Sen. Joni Ernst will not seek re-election for a third term, according to multiple reports.

CNN reported that Ernst, Iowa's first woman elected to Congress, is expected to make an announcement next week.

Two Republicans have previously announced their candidacy for the Senate race: Jim Carlin and Joshua Smith. There are four Democrats in the race : Jackie Norris, Nathan Sage, Josh Turek and Zach Wahls.

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