The Post today endorses Republican Linda McMahon for the US Senate in Connecticut. If she wins -- and polls suggest she is closing in fast on her Democratic opponent -- this would be a major pick-up for the GOP, which hasn't won a Senate race in the Nutmeg State since 1982. By all rights, McMahon would seem to be the ideal political neophyte seeking office: Well-spoken, intelligent and CEO of one of the state's largest and most successful businesses, which has brought 600 jobs to Connecticut. The problem is that her business is professional wrestling -- immensely popular, to be...