Battleground Ohio is coveted territory in election race

By Kim Palmer CLEVELAND (Reuters) - As a perennial swing state and one that yields 18 electoral college votes, Ohio has long been coveted territory for U.S. presidential candidates who pour piles of cash every election cycle into wooing its voters. Since the 1860 election of Abraham Lincoln just three presidents, and no Republican contender, have gone to the White House without winning the "Buckeye State." During this year's Republican party primaries, Donald Trump's pro-coal mining, anti-free t