With the U.S. presidential race tightening in a struggle for women voters, John McCain on Wednesday seized on a remark about lipstick by rival Barack Obama as a sexist attack on his running mate. McCain rolled out a Web advertisement on Wednesday saying his Democratic rival was talking about Sarah Palin on Tuesday when he likened Republican plans for government reform to putting "lipstick on a pig." Palin, a little-known governor of Alaska before she became McCain's running mate, had told the Republican nominating convention this month that she was a "hockey mom" and joked that the only difference between a hockey mom and a pit bull was "lipstick."