Republican frontrunner Mitt Romney's Super PAC has begun buying ads on cable and broadcast television in Ohio, a crucial state whose vote will be on "Super Tuesday," March 6, a Republican media-buying source said.
While election day is a long way out, early voting in the state starts this week, on February 8.
The move by the Super PAC Restore Our Future makes clear that Romney wants to end the campaign in Ohio, where his opponents also aim to make a stand.