The Senate Conservatives Fund's latest target is the GOP's leader in the Senate.
The conservative group has launched a radio ad in Senate Minority Leader Mitch McConnellMitch McConnellTrump slams Obama for ‘shameful’ 9/11 bill veto GOP chairman lobbies against overriding Obama on 9/11 bill Black Caucus demands Flint funding from GOP MORE's (R-Ky.) district that scolds him for not supporting an effort that risks a government shutdown over funding ObamaCare.
According to The Associated Press, the ad highlights McConnell's reluctance to sign a letter in which he'd pledge his support to vote against any government funding bill that includes money for ObamaCare.
It also alludes to McConnell campaign manager Jesse Benton's comments — from a private conversation that leaked — in which Benton said he was "holding my nose" to work with McConnell.
"The ObamaCare bill stinks, and holding your nose won't make it any better," the narrator says.
The radio ad is backed by $50,000 and will launch Tuesday.
McConnell is facing a Tea Party challenge from Kentucky businessman Matt Bevin, and the polarizing issue of defunding ObamaCare — popular with the conservative grassroots — could become a difficult issue for him.
His campaign spokeswoman, Allison Moore, asserted in an email that it was "absurd" to suggest McConnell hadn't fought against the law.
"There is nobody in Congress who has done more to fight Obamacare since day one than Mitch McConnell and any assertion to the contrary is absurd," she said.
Moore also suggested that McConnell is working to "unite conservatives."
"Senator McConnell is a co-sponsor of the repeal bill, a
co-sponsor of the defund bill, and has said that if elected Majority
Leader getting rid of Obamacare would be the first thing on his agenda.
Senator McConnell's primary goal is to unite conservatives rather than
exacerbate differences to stop this train-wreck of a law and give us the
best chance for success," she said.
The Senate Conservatives Fund hasn't endorsed Bevin, but its continued attacks on McConnell are an indication they're moving closer to supporting his opponent.
The group has targeted six other GOP senators who, like McConnell, have not signed the defunding ObamaCare letter: Sens. Richard BurrRichard BurrSenate rivals gear up for debates The Trail 2016: Trump seizes on Charlotte violence Polls: Dem Senate candidates lead in three states MORE (N.C.), Lindsey GrahamLindsey GrahamOvernight Finance: McConnell offers 'clean' funding bill | Dems pan proposal | Flint aid, internet measure not included | More heat for Wells Fargo | New concerns on investor visas Senators buck spending bill over Export-Import Bank Pelosi pans latest GOP stopgap spending offer MORE (S.C.), Lamar AlexanderLamar AlexanderOvernight Regulation: Lawsuits pile up against Obama overtime rule The American people are restive, discouraged and sometimes suicidal GOP chairman eyes lame-duck for passing medical cures bill MORE (Tenn.), Johnny IsaksonJohnny IsaksonGrassley pulling away from Dem challenger Fifteen years since pivotal executive order, STORM Act could help fight terror finance GOP pressures Kerry on Russia's use of Iranian airbase MORE (Ga.), Jeff FlakeJeff FlakeTop GOP chairmen investigating foreign visa program Pence rallies GOP before final stretch Libertarian nominee top choice among veterans MORE (Ariz.) and Thad CochranThad CochranMomentum builds for Clyburn poverty plan 'Hardball' Pentagon memo creates firestorm Insiders dominate year of the outsider MORE (Miss.).
Many Republicans oppose the strategy of threatening to shut down the government over defunding ObamaCare, arguing the GOP will take a political hit if voters are upset by the shutdown.
--This piece was updated at 1:14 p.m. to reflect comment from McConnell's campaign.