President Barack Obama will try to rev up Democrats in Ohio as the number of states that could swing to either Hillary Clinton or Donald Trump narrows to just a handful.

Obama heads to Columbus on Thursday to speak at an annual dinner benefiting Ohio Democrats and Gov. Ted Strickland. The next day he'll hold a rally in Cleveland for Clinton, emphasizing early voting.

Before flying to Ohio, Obama will speak in Pittsburgh at the "White House Frontiers Conference." Aides say he'll announce new funding for technology and research and tout innovations like self-driving cars and artificial intelligence.

This week Obama entered the final 100 days of his presidency. He's increasingly devoting his time to trying to push Clinton over the finish line in the presidential race.