Rep. Shelley Moore CapitoShelley Wellons Moore CapitoTrump plan to claw back billion in spending in peril Trump presses for wall funding in DHS spending bill The Hill's 12:30 Report — Sponsored by Delta Air Lines — Furor grows over child separation policy MORE (R-W.Va.) will announce her bid for Democratic Sen. Jay RockefellerJohn (Jay) Davison RockefellerSenate GOP rejects Trump’s call to go big on gun legislation Overnight Tech: Trump nominates Dem to FCC | Facebook pulls suspected baseball gunman's pages | Uber board member resigns after sexist comment Trump nominates former FCC Dem for another term MORE's seat on Monday, according to the West Virginia Metro News.

The seven-term congresswoman declined to run against Democratic Sen. Joe ManchinJoseph (Joe) ManchinKaine shares photos of child detention facility: ‘The real Trump Hotel’ Manchin becomes final Democrat to back bill preventing separation of immigrant families Manchin touts support for Trump border wall in new ad MORE this year but is considered a strong contender for the seat.

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The 75-year-old Rockefeller is currently in his fifth term, and could retire, though he has not yet announced his plans for the upcoming cycle. He's won nearly all of his elections with sizable margins.

Her Senate bid means that Capito's 2nd District seat will be open in 2014.