The band of brothers that Democrats are banking on to win back the Congress this year may inspire voters with tales of wartime valor, but many in their own party doubt they are prepared for the battlefield of professional politics. Iraq war veteran Paul Hackett, perhaps the best-known Democratic veteran running for office, energized liberals nationwide last year by criticizing President Bush during his House race but alienated conservatives in Ohio’s 2nd District by calling the president names. Hackett stumbled in early September, Democrats add, when he failed to announce his bid to unseat Sen. Mike DeWine (R-Ohio) sooner instead...