Surrogates of Rick Santorum ran robo-calls in Wisconsin accusing Mitt Romney of advancing gay marriage.

The robo-calls, which first appeared a day before voters in Ohio headed to the polls on Super Tuesday, feature Brian Camenker, who heads the Massachusetts-based anti-gay rights group MassResistance, and were paid for by the conservative group Jews and Christians Together.

On MSNBC's The Rachel Maddow Show, host Rachel Maddow noted that the calls were sent out in advance of Tuesday's primary in Wisconsin.

“If you believe as we do that marriage and sexuality should only be between a man and a woman, please help us stop Mitt Romney,” callers are told.

“As governor, Romney signed Gay Youth Pride Day proclamations, promoted homosexuality in our elementary schools, and unconstitutionally ordered state officials to make Massachusetts America's first same-sex marriage state. Romney supports open homosexuality in the military, the appointment of homosexual judges, and the ENDA law, making it illegal to fire a man who wears a dress and high heels to work, even if he's your kid's teacher.”

“When you vote tomorrow, please vote for social sanity and Rick Santorum, not for homosexuality and Mitt Romney.”

Commenting on the calls, Maddow said: “Rick Santorum lost both the states where this robo-call was sent out, but how many people who got this robo-call now think that Rick Santorum has a running mate named 'social sanity' and Mitt Romney is running for president along with a vice presidential nominee named 'homosexuality'? Seriously, that's what it makes it sound like.” (The video is embedded in the right panel of this page. Visit our video library for more videos.)

(Related: Rachel Maddow: Rick Santorum, Michele Bachmann look ridiculous bashing gays.)