A mayor who three years ago broke the law by marrying a same-sex couple is running for the US Senate.

However rather than shying away from it, Braddock Mayor John Fetterman wants everyone to know what he did.

He married the same-sex couple before the act was legal in Pennsylvania, and two years before the US Supreme Court ruled in favour of equal marriage.

Gay couple 2

In the new campaign ad, which aired yesterday on Thursday’s MSNBC Democratic presidential town hall, Fetterman discusses opposing the law which then banned gay couples from marrying.

He hopes to take the seat of incumbent Republican Pat Toomey.

The Republican Senator is a strong opponent of same-sex marriage, and is a supporter of a constitutional amendment to overturn the Supreme Court’s ruling.

“There’s the right thing and there’s the wrong thing,” Fetterman says in the ad.

“I’m always going to choose to do the right thing regardless of the consequences.”

Gay couple 3

Fetterman will face Representative Joe Sestak, and Kathleen McGinty in the Democratic primary.

Watch his campaign ad below: