The congressman has been moving towards a Senate run for weeks, hiring staff and letting Republicans in the state know he planned to run, sources tell The Hill.

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He also recently voted against the House Republican budget drafted by Rep. Paul RyanPaul Davis RyanIs Joe Biden finished? Krystal Ball previews fifth Democratic debate Former Speaker Boehner's official portrait unveiled MORE (R-Wis.) because it didn't balance the budget quickly enough. Some believe the move was to keep Rep. Paul BrounPaul Collins BrounHundreds apply to fill Isakson's Senate seat in Georgia Joe Lieberman's son running for Senate in Georgia California lawmaker's chief of staff resigns after indictment MORE (R-Ga.) from running to his right, as he'd backed previous Ryan budgets and had praised this year's plan before voting against it.

He'll be the second congressman officially in the race after Broun. Others mulling a bid include Reps. Tom Price (R-Ga.) and Jack Kingston (R-Ga.) and former Georgia Secretary of State Karen Handel (R), who is unlikely to run if Price does since they're political allies. Kingston has also been moving towards a bid, while Price has said he won't make a decision until May.

Many Democrats are hoping Rep. John BarrowJohn Jenkins BarrowRepublican wins Georgia secretary of state runoff to replace Kemp The most important runoff election is one you probably never heard of Our democracy can’t afford to cut legal aid services from the budget MORE (D-Ga.) will run.