Democratic congressional candidate John Callahan’s unveiled his campaign’s first ad Friday, a 30-second spot that says his tenure as Bethlehem’s mayor proves he’ll fight for Main Street unlike his Republican opponent, incumbent Charlie Dent.

“The typical Washington politicians helps Wall Street; I’m focused on Main Street,” Callahan says to start the ad as he walks down a North Bethlehem street.

The ad spotlights Callahan’s plan to help small businesses before pivoting to slam Dent as a supporter of bailouts, CEO bonuses and policies that “led to the recession.”

“Congress Dent: He works for Wall Street,” the mayor said.

Dent began his own TV campaign almost simultaneously, pa2010 reports. Callahan’s race in the 15th District is seen as one of the Democratic Party’s few opportunities to defeat an incumbent Republican this year, although a seemingly worsening political climate for Democrats could make the race an uphill fight for the mayor.