After Caroline Kennedy’s bumpy bid for Hillary Clinton’s New York Senate seat ended this morning amid alleged problems involving taxes and her housekeeper, sources said Gov. David Paterson would appoint Upstate Democrat Kirsten E. Gillibrand instead. A centrist with an endorsement from the National Rifle Association, Gillibrand was elected to the U.S. House of Representatives in 2006 and is the first Democrat to represent her district since 1978. Before today, the two front-runners for the seat had been Kennedy and state Attorney General Andrew Cuomo. “I’m honored just to be considered,” said Gillibrand. Paterson says he’ll formally announce his pick at noon on Friday.