 who's been the leader of the opposition in Parliament for the past four years. If polls are right and he does win, he'd meet with the king and then move into 10 Downing Street tomorrow. Lauren Freyer, NPR News, London. Two NASA astronauts are spending an unplanned 4th of July holiday aboard the International Space Station due to problems with their spacecraft. As NPR's Jeff Brumfield reports, it's not clear when they'll return home.