Shivercrats were a conservative faction of the Texas Democratic Party in the 1950s named for Texas Gov. Allan Shivers (D).
The term was first used in 1952 after Shivers backed Republican Dwight Eisenhower for president over Democrat Adlai Stevenson.
Interestingly, Lyndon B. Johnson initially aligned himself with the Shivercrats as a U.S. Senator but increasingly sided with liberals on domestic policy after becoming president in 1963. Most of the Shivercrats ended up leaving the Democratic party as the liberal-moderate faction took control of the state party after 1970.