At a rally introducing her new running mate, Virginia Sen. Tim Kaine, Clinton declared the senator was a “progressive who likes to get things done.” Kaine has a liberal record as a senator — but when he was running for governor of Virginia in 2005, he brandished his conservative beliefs on “issues of personal responsibility.” The ads can be seen and downloaded on his gubernatorial election page. In one radio, Kaine declares his social conservatism on issues like same-sex marriage and parental consent for abortion, and banning late-term abortion. (Kaine’s position overall has been that he personally opposes abortion as...