BISMARCK -- First, a series of heterosexual couples kiss. Then, two men are shown about to lock lips. All are dressed for a wedding. That is followed by three people, depicting a wedding of two men and a woman. The campaign commercial's message: Sen. Byron Dorgan supports gay marriage and unless North Dakotans vote for Republican Mike Liffrig for the U.S. Senate, they can "kiss their morals goodbye." Democrats demanded Tuesday that Liffrig pull the plug on that ad and another commercial that claims Dorgan supports human cloning, saying the allegations are lies. The ads began running statewide Monday and...