BATON ROUGE (AP) — A conservative group is criticizing Democratic U.S. Sen. Mary Landrieu in a new television ad for supporting the president’s judicial picks.

The Judicial Crisis Network said the 30-second commercial began running Monday and will air statewide for two weeks. The organization ran a similar ad against U.S. Sen. Mark Pryor, a Democrat from Arkansas.

The spot slams Landrieu for backing President Barack Obama’s judicial nominees and for supporting a Senate rule change curbing the use of the stalling tactic called the filibuster, a move that will help Obama fill vacant judgeships.

“Tell Mary Landrieu to go to work for Louisiana, not Obama,” the commercial says.

It’s the latest of several attack ads launched by conservative and Republican groups against Landrieu, who is seeking a fourth term in the November 2014 election. She faces two Republican challengers: U.S. Rep. Bill Cassidy and retired Air Force Col. Rob Maness, who has the support of several tea party organizations.

Landrieu’s campaign called the ad “blatantly false,” saying the list of judges named in the spot as getting votes of support from Landrieu includes judges who were confirmed with bipartisan majorities and two nominees who never received a vote and weren’t confirmed.

The senator’s campaign also said Landrieu was part of a bipartisan group of senators that worked to confirm judges chosen by former President George W. Bush.

U.S. Sen. Mary Landrieu

Brad Puckett