Will Ferrell and Zach Galifianakis have kicked off their "campaign" trails as they promote their new movie.

The pair bantered about politics from podiums in Los Angeles on Tuesday, answering questions about The Campaign, which pokes fun at politicians.

Ferrell, who played President George W. Bush on Saturday Night Live, pointed out what he considered to be a key trait of an electable candidate, slamming the former president in the process.

"Diction, proper diction. I take that back, George Bush was elected for eight years, and he didn't quite have that," said Ferrell. "Normally, proper diction, and tall, you have to be tall."

The film is out on August 10.