President Barack Obama & former Mass. Gov. Mitt Romney (CNN)
COLUMBUS, Ohio (AP) -- Bolstered by a strong debate performance, Mitt Romney is intensifying his efforts in the key state of Ohio. The Republican presidential nominee told a rally in Cuyahoga Falls Tuesday night, "Ohio's going to elect me the next president of the United States."
President Barack Obama also campaigned hard in Ohio Tuesday calling out to students at Ohio State University, "All right, Buckeyes, we need you."
It's the last day of voter registration with Election Day now just four weeks away and Obama's campaign had buses nearby, ready to ferry students or other supporters to registration centers.
There are signs the president's advantage in Ohio is narrowing as a new CNN poll shows Obama leading Romney 51 percent to 47 percent among likely voters in the Buckeye State. Some Republican strategists say the race is even closer.
No Republican has won the presidency without winning Ohio.
Meanwhile, Ohio's election chief has appealed a ruling by a federal court that reinstates the final three early voting days in the battleground state.
Secretary of State Jon Husted on Tuesday asked the U.S. Supreme Court to make the final decision on whether the state Legislature or federal courts should set Ohio election laws.
Husted, a Republican, also asked the court to delay the lower court's decision while it decides whether to take the case.
The 6th U.S. Circuit Court of Appeals reinstated early voting on the three days before Election Day, returning discretion to local boards of elections.
President Barack Obama's campaign and Democrats had sued Husted and Ohio's attorney general over part of a law cutting off early voting for most residents on the Friday evening before a Tuesday election.