The Wisconsin Senate race between incumbent Democrat Russ Feingold and Republican challenger Ron Johnson may be, in part, a referendum on the future of high-speed rail in America. The battle over a proposed high-speed rail line that would connect a scant 70 miles between Wisconsin’s two largest cities and be funded by $810 million in federal stimulus money has become symbolic of the political cage match for one of Wisconsin’s Senate seats this November...the fevered debate over high-speed rail in Wisconsin could well determine the outcome of Wisconsin’s Senate battle, which could in turn determine the fate of high-speed rail...