It’s no secret that Cintas Corp. CEO Scott Farmer showers part of his wealth on Republican political candidates. Over the years, he has thrown money at George W. Bush, Rob Portman and Steve Chabot. This year, he has given $52,500 to the Mitt Romney campaign. His wife Mary has ponied up $22,500. But votes, not money, win elections, and the Farmers’ two meager votes don’t amount to much....