Mainly posting because Missouri might have it's first vaguely competitive district since 2010. So after redistricting in 2010, the Missouri 2nd district gave up much of the very conservative St. Charles County, and is now mainly limited to St. Louis county, as well as bits of St. Charles, Jefferson, and according to ballotpedia Franklin and Warren counties.
Old District
New District
This year it looks like Democratic State Representative Bill Otto will go up against incumbent Republican Ann Wagner. Interestingly, despite Wagner blowing her opponent out of the water in 2014, the total Democratic and Republican vote in the primary in 2014 was almost the same.
I highly doubt this will be competitive come November, but given that St. Louis and St. Charles counties were some of Trump's weakest wins in Missouri, and with his nomination looking increasingly likely, could we see the 2nd District become competitive if 2016 turns into a blowout for the Democrats?