WASHINGTON (Reuters) - Republican Senator John McCain expects many U.S. Republicans to seek the party's presidential nomination in 2012. "I think there's going to be 1,000 flowers bloom," he said Monday at the annual Washington Reuters Summit. McCain, who won the nomination in 2008 and went on to lose to Democrat Barack Obama in the presidential election, did not predict who he thought might run. "I think it's too early," he said. (snip) McCain's advice to Republicans: Keep your eye on New Hampshire. (snip) "For Republicans it seems to me that New Hampshire is still the very key place," McCain...