What happened? These races show that you can't say/do brazenly ridiculous things (i.e. talk about your nice house and kids in college in saying that you're "dang straight" going to collect your paycheck during the sequester or holding an all male fundraiser) and expect to be re-elected. It's a shame in Southerland's case, because I really liked him when I met him. He's a jolly, nice guy, but he's apparently clueless in that way.
Which was which?
I know Southerland was pretty extreme, but plenty of others survived in comparable districts.