(CNN) - A conservative group says it's spending six figures over the next two weeks to run a TV commercial in Louisiana that criticizes Democratic Sen. Mary Landrieu over her support of Presidential Barack Obama's judicial nominees.
The group also goes after Landrieu, who could face a challenging re-election next year, for supporting a measure that lowered the threshold for ending Republican-led filibusters in the Senate.
"Landrieu even helped change the rules to pack a key court with new liberal judges who will review Obamacare, the EPA, the IRS, and agencies Obama is using to push his unconstitutional job killing agenda," adds the narrator.
Under the old rules, it took 60 votes to break a filibuster of presidential nominees. The change means a simple Senate majority of 51 now suffices in the chamber that Democrats currently control with a 55-45 majority. The change affects presidential executive nominations such as ambassadors and agency heads, along with judicial nominations except for Supreme Court nominees. It does not include filibusters of legislation.
"The latest blatantly false attack ad by the Judicial Crisis Network attacks Sen. Landrieu for voting to confirm judicial nominees, whom were confirmed with bipartisan majorities, while shockingly claiming that Landrieu voted to confirm two nominees that never received a vote, and were never even confirmed," said an email by Landrieu's campaign, in response to the new commercial.
"The ad goes on to accuse Sen. Landrieu of packing the court with liberal judges, another completely false claim that has already been slammed once by Politifact as 'false.' "
This is the second recent ad by the Judicial Crisis Network to go after a vulnerable Democratic Senator up for re-election in 2014 in a Republican-leaning state. They went up with a spot last month that targeted Sen. Mark Pryor of neighboring Arkansas.
The Washington Post was first to report on the new commercial.