Tough night kiddo. That you were enamored by Edwards more than the others recommends you. At the debate, he really went after Kerry to the extent that it caused Howard Fineman to comment, "well, he hasn't burned the bridge. the bridge is smoldering, but it's still there. Barely." But don't put much stock in that. Remember, Reagan (no he isn't the devil incarnate) and Bush went at each other's throats in the 1980 primary debates, only to go on to form a lasting and successful professional relationship. Only time will tell.
Johnson ran a serious smear campaign against Kennedy and they really fought it out before he chose him as VP although that was more to secure the South lol.