DES MOINES, Iowa (AP) — U.S. Sen. said Tuesday that she will not seek reelection next year, confirming in a video post on social media that she will retire after months of speculation about her plans.

Ernst's departure opens up a Senate seat in the state known for its long-serving incumbents. Ernst was first elected in 2014 to the open seat previously held by Tom Harkin, a Democrat who served for 30 years. Republican Chuck Grassley, Iowa’s senior U.S. senator, was first elected to the Senate in 1980.

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