Democrats who still hold out hope for a takeover of the senate in November are fretting about the prospects of one of their most vulnerable incumbents. Senator Bill Nelson is being outspent, out manuevered, and out classed in his race to keep his Florida senate seat blue. His opponent, Governor Rick Scott, has been all over the state, contrasting his vigorous campaign with that of the 75 year old Nelson. Any hopes of Democrats taking over the senate hinge on them holding seats in states won by Trump in 2016. All are locked in tight races with excellent GOP challengers....