I mainly mean that Missouri is a super Red state despite the majority of the population being liberal. They just all live in the 3-4 counties that comprise the St. Louis and Kansas City areas, and Republicans in power use all the usual tricks to disenfranchise more liberal voters. Compared to, say, Seattle/WA, voting in Missouri is clearly designed to make it hard for "certain types" of people to have a say in their governance.
(Plus, yeah, I don't like the "land shouldn't vote" part of the electoral college either).
I lived for a long time in Missouri, and... I'm not sure how you got the idea the majority of the population is liberal.
I don't see how there's any gerrymandering that could lead to the senators and governors being so consistently Republican since 2016 (and I'm pretty confident McCaskill would've lost in 2012 if Akin hadn't made his "legitimate rape" comments).
I agree that Missouri's house representation is heavily skewed by gerrymandering, if that's what you meant.
(Plus, yeah, I don't like the "land shouldn't vote" part of the electoral college either).