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Some Republicans, most of them from the establishment, are concerned that if King runs for the Senate he could hurt the GOP's chances of winning an open seat because of past controversial statements and positions. Longtime Sen. Tom HarkinThomas (Tom) Richard HarkinIowa’s Ernst will run for reelection in 2020 California primary threatens to change 2020 game for Dems Mellman: Dems’ presidential pick will be chosen in a flash MORE (D-Iowa) is retiring at the end of his term, and Rep. Bruce BraleyBruce Lowell BraleyOPINION | Tax reform, not Trump-McConnell feuds, will make 2018 a win for GOP Ten years later, House Dems reunite and look forward Trump: Ernst wanted 'more seasoning' before entertaining VP offer MORE (D-Iowa) is the likely Democratic nominee.

King pushed back in the appearance against the GOP's recent rebranding efforts, arguing Republicans should continue to embrace the "full-spectrum of our conservatism" rather than soften their stances on issues like gay marriage or immigration.