Dorchester residents are seeing some familiar faces in the television ads for the Massachusetts Senate race.

“Her father was janitor; my father was a janitor,” says Catherine O’Neill, a Savin Hill resident whose statement opens U.S. Senate candidate Elizabeth Warren’s latest ad, which started airing on Wednesday. O’Neill is active in local politics and recently wrote a politically-themed play, “Murph,” which just wrapped up a run at the Boston Playwrights’ Theater.

“Big banks, institutions, Wall Street — she’s not afraid of anybody,” O’Neill adds later in the 30-second ad.

Sandi Bagley, who once chaired the Ward 15 Democratic Committee, also appears in the ad, saying, “The consumer protection agency she started is vital.” Warren, then a top adviser to President Obama, helped set up the Consumer Financial Protection Bureau.

The ad also features Warren talking to supporters at Spukies, a pizza shop on Washington St. in Lower Mills. An earlier Warren ad was also shot in Lower Mills and used the former Baker Chocolate Factory as a backdrop.

Warren is expected to be Democrats’ choice to face off this fall against U.S. Sen. Scott Brown, a Wrentham Republican seeking a full six-year term.

On May 9, Brown released his own 30-second ad, which featured an August trip to the Boys and Girls Clubs of Dorchester’s Savin Hill campus. The Dorchester Reporter’s managing editor, Bill Forry, made a cameo while pulling double duty as a photographer for the newspaper at the event.

"There's absolutely nothing in this world that you can't get if you work hard at it,” Brown tells the kids.

The ads are available below:

Warren ad, “People”:

Brown ad, “Independent”: