The Republican National Committee has pulled from the airways a controversial ad demeaning Senate Democratic nominee Harold Ford Jr. The RNC apparently intends to replace the ad. The Senate Republican nominee Bob Corker had asked that the ad be taken down, calling it "tacky." "We felt like it was tasteless and didn't reflect the kind of campaign we were running," said Corker spokesman Todd Womack. The ad, called "Who hasn't," began running Friday. In the ad, a man in sunglasses says of Ford, "So he took money from porn movie producers. Who hasn't?" The ad continues with a bare-shouldered blond...