The Senate Conservatives Fund is upping its ante against Senate Minority Leader Mitch McConnell by launching a TV attack ad statewide.

The ad is aimed at urging the Kentucky Republican to lead an effort that seeks to tie upcoming spending bills to a push by rank-and-file Republicans to defund President Barack Obama’s health care law. Critics of that effort, including some GOP leaders, have said demanding that Obamacare be defunded as part of the spending bill debate would only shut down the government, while mandatory spending on the health care law would continue.

McConnell himself has said that shutting down the government will not accomplish the goal of stopping Obamacare.

The ad is backed by $340,000 and is running on broadcast and cable TV statewide Sept. 6-17, according to the SCF, which announced the ad buy on Thursday. It’s a follow-up to a similarly themed radio ad that the group launched last week. All told, the SCF has dumped nearly $400,000 into the race in the past two weeks.

“Obamacare starts in October but Congress can stop its funding,” the ad’s announcer says. “What’s Mitch McConnell doing? Nothing.”

The ad comes as McConnell faces a Republican primary challenge from Louisville businessman Matt Bevin and, should McConnell advance, a general-election opponent in Kentucky Secretary of State Alison Lundergan Grimes.

https://www.youtube.com/watch?v=Sse7GiihP_8