New York Gov. David Paterson will announce his appointment to replace newly-confirmed Secretary of State Hillary Clinton at noon on Friday, CQ Politics reports. But the pick may not calm the politics: Rep. Carolyn McCarthy (D-NY) said that if Rep. Kirsten Gillibrand (D-NY) is appointed to the Senate, she would mount a primary challenge in 2010, Roll Call reports. Gillibrand and state Attorney General Andrew Cuomo (D) are now seen as the leading contenders for the position.