Democratic consultant James Carville and Republican consultant Mary Matalin are on the road to becoming advertising's "it" couple—that is, when brands want a commercial that weds their product to marital bickering and cheesy political tie-ins. In a new spot for Mitsubishi Electric Cooling & Heating, Carville, 67, and Matalin, 59—married since 1993—argue over the state of the thermostat, lobbing hot-button puns at each other. It's a more sober debate than the pair's recent work for Maker's Mark, but nothing seems to light a populist fire in Carville's belly like Miracle Whip. The Mitsubishi ad, created by Atlanta agency Ames Scullin O'Haire, is set to launch Monday and will air on CNN and Fox, as well as on ABC and CBS during coverage of the party conventions, where cooler heads almost certainly won't prevail.