By DAN SEWELL, JOHN SEEWER and JULIE CARR SMYTH, Associated Press
COLUMBUS, Ohio (AP) — Ohio could well decide the next president; the state has chosen the winner in the last 12 presidential elections and it's pivotal to the strategies of both President Barack Obama and Mitt Romney.
The Ohio winner has usually done particularly well in his party's traditionally strong areas, and better than expected in other regions.
The state's geography is often divided regionally as the "Five Ohios." Here they are politically:
NORTHEAST OHIO: Obama needs to pile up votes in the state's Democratic stronghold, anchored by Cleveland and the industrial towns of Youngstown and Akron.
But these areas, once home to dozens of steel, auto and tire factories, have lost population in recent years. A drop in turnout could be devastating for the president.
Cuyahoga County, the state's biggest, is also the most reliable for Democrats. The county includes Cleveland and working class suburbs. It gave Obama one of every six votes he won Ohio with four years ago. He had 70 percent of Cuyahoga's votes, 3 percentage points better than John Kerry in '04.
Romney needs to do well in Republican-leaning suburbs tucked between the cities. Unemployment numbers in the suburban areas are improving, and fall well below the state average of about 7 percent. One big question in this region and in northwest Ohio is whether voters will credit Obama and the federal bailout with revitalizing the auto industry, an important employer and economic driver.
Watch Romney campaign in Cleveland:
SOUTHWEST OHIO: The conservative suburban crescent around Cincinnati is the GOP's answer to Cuyahoga County; Butler, Warren and Clermont counties are Republican turf. Romney needs blowout totals. George W. Bush carried the region twice with 2-to-1 margins; he got 72 percent of Warren's vote in '04 as he clinched re-election.
Obama did 3 to 4 percentage points, some 23,000 votes more, better than Kerry in the counties and has a bigger presence this year. But Romney has held major rallies in the area to fire up the base.
Montgomery County, to the north, has been going Democratic in recent presidential elections, but Republicans think they are picking up strength and pro-Romney ads have highlighted Obama defense cuts in an area with the state's largest military base, Wright-Patterson Air Force Base.
To the south is Hamilton County. Obama was the first Democratic presidential candidate to win the Cincinnati-based county since Lyndon B. Johnson in 1964, and Republicans are anxious to win it back. They've had an aggressive ground game, and see added advantages: no competitive Democratic challengers in the two congressional districts, and it's the home base of Romney Ohio chairman Sen. Rob Portman.
Watch Obama campaign in Cincinnati:
CENTRAL OHIO: Ohio's capital city of Columbus is friendly ground for Obama; it's led by a popular black mayor, with Democratic voters in trendy communities and inner-city neighborhoods. But Franklin County also has more Republican voters than any other county in Ohio, many with ties to its government, insurance and financial sectors.
Obama has tried to fuel enthusiasm with frequent rallies, building on strength at Ohio State University, among the nation's largest universities. Romney has campaigned often in affluent, heavily Republican suburbs that ring the city — such as Bexley, Powell and Westerville, where GOP Gov. John Kasich lives.
Republican-leaning counties stretch from Columbus northward to the mid-sized cities of Mansfield and Marion, middle-class communities.