After much speculation that his failed presidential bid would be his last campaign, Sen. John McCain (R-Ariz.) has decided to run for re-election to his Senate seat in 2010.McCain, 72, announced the decision during a meeting Tuesday evening with top ally Sen. Lindsey Graham (R-S.C.), advisers Rick Davis, Charlie Black, Carla Eudy and other aides. The meeting, according to a knowledgeable source, took place off the Hill in a private office.McCain will also restart his leadership political action committee, according to the source.Though not at Tuesday's meeting, one source close to McCain said that running for re-election is his intention. Hes ready to get back, this source said. He likes the game. He likes the deals.