North Dakota Sen. Heidi Heitkamp says she'll seek a second term in the U.S. Senate.
Heitkamp, a Democrat who narrowly won her seat in 2012, had been widely expected to make another run. She made her announcement Wednesday on her brother Joel Heitkamp's Fargo-based radio talk show on KFGO-AM.
Heitkamp, 61, has stockpiled $3 million for what's expected to be an expensive and hard-fought campaign to retain a Democratic seat in a strongly conservative state that Republicans think they can win. President Donald Trump carried the state by 36 points last year and remains popular.
State Sen. Tom Campbell is the only candidate declared so far on the Republican side, but U.S. Rep. Kevin Cramer is also weighing a run.
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