ABCNews -- The mayoral races in Atlanta and Houston today could both result in landmark decisions. In Atlanta, Mary Norwood is urging voters to look beyond race and choose her as the mayor of a city that remains more than 60 percent African-American. If they do, she would be the city's first white mayor in more than three decades. And in Houston, Annise Parker urges voters to choose her as the first openly gay woman elected mayor of a major American city. Norwood is a surprise. She lives in the middle of "old money" Atlanta, in the city's Buckhead neighborhood, and despite that, she has more than a third of the city's black voters supporting her in the nonpartisan campaign. "I don't care about color. That's unimportant to me, color. Race is...