It's hardly news that sportscasting, MSM-style, offers no respite from liberal politics. Particularly so when it comes to the ABC/Disney owned ESPN, the sports network that pressured Rush Limbaugh to resign from its Sunday NFL Countdown pregame show for saying what was on his mind about media treatment of Eagles QB Donovan McNabb.Even so, it came as something of a shock to observe that one ESPN personality is turning his on-screen appearances into an opportunity to promote the candidacy of a Dem presidential contender. Many sportscasters have their signature calls. From Stuart Scott's "boo-yah!" to Chris Berman's "back-back-back gone!," several...