New York politics is about to get messier. The state’s Republican Party has reportedly tapped Diana Taylor, the former state banking superintendent and longtime girlfriend of Mayor Bloomberg, to run against Sen. Kirsten Gillibrand. Sources say that Taylor hasn’t ruled out a possible Senate run, though she is notoriously private and shies away from interviews in spite of her high-profile relationship and long background in politics. Taylor is a registered Republican and served in multiple roles in Gov. Pataki’s administration, and has also worked at the Wolfensohn Family Foundation.