It's all in the family.

Sen. Mary Landrieu is getting an assist from her father, former New Orleans Mayor Maurice "Moon" Landrieu, in a new TV campaign ad rolling out today.

A little family branding may provide a needed boost to the Louisiana Democrat as she faces a tough re-election bid against leading Republican opponent Rep. Bill Cassidy, as well as tea party underdog Rob Maness.

In the ad - filmed in the senator's childhood home - Moon Landrieu makes the case that his "hardheaded" daughter has used her stubbornness to fight for Louisiana.

"When you have nine children, you're bound to have one who's hardheaded," Landrieu, 83, says to the camera as his daughter sits down beside him.

"Dad, you're one to talk," says Sen. Landrieu, who chairs the Energy and Natural Resources Committee.

Moon Landrieu goes through a series of issues for which he says Landrieu has used her "hardheadedness" in Louisiana's favor: standing up to BP after the oil spill that devastated the state's coastline in 2010 and breaking with President Obama to call for the approval of the controversial Keystone oil pipeline.

At the ad's end, the father leans in and whispers to the camera: "And now you know why Putin won't let her into Russia."

Sen. Landrieu, 58, simply shakes her head in response.

More than 40 years after he was elected mayor, Moon Landrieu continues to enjoy wide popularity in the state where he is seen as a political patriarch of sorts, with son Mitch Landrieu also serving in elected office now as the mayor of New Orleans.

The ad, which says "to be continued" on screen, is the first in an expected series of two ads from the father-daughter duo. The second ad, currently posted online, is a continuation of the father-daughter banter.

It begins with Sen. Landrieu saying, "I'm Mary Landrieu, and I approve this message." Moon Landrieu then turns to his daughter and asks, "Aren't you supposed to say that at the end?"

"You can start with it," Landrieu replies and suppresses a laugh. "I'm not so sure I'll want to approve it at the end of this."

Moon Landrieu goes on to compliment his daughter's work for the oil and gas industry in Louisiana and her post-Katrina efforts, adding at the end, "See, I did say something nice."