Cool! That general leftward shift definitely explains the prevalence of proto-protectionist and vaguely isolationist Labour tendencies.Thank you! I was actually planning on making a list of the Texas Presidents soon, so that should be done at some point
As for the UK, the Labour party dominated British politics for much of the 30's and early 40's, so the struggling Liberals and the Conservatives decided to form several electoral pacts and coalitions at that point which ended up being very successful for them. Eventually the parties officially merged in the Liberal-Conservative Party in the early 60's. The SDP still forms in the 80's in the same manner, but they are able to perform fairly well in the now empty space between the two major parties. The Lib-Con, Labour, and SDP parties are like the Conservatives, Labour, and Lib Dems of OTL, but shifted one notch to the left (Tony Blair, for instance, is a great example for the typical SDP politician). As the other parties have shifted more to the left, this opened a great slot on the right for UKIP to fit into. Labour in this timeline is much more dominated by who would be the "pro-Brexit" left in OTL, so their collapse in 2019 was not as dramatic in northern England than in our 2019 election.