“The Democrat Party”
One of the stupidest little games Republicans like to play is to refer to the Democrats as the “Democrat Party” rather than the “Democratic Party.” Seems like especially around 2009-11, this was pretty common and a lot of Democrats got angry over it. I mostly ignored it because whatever. It is worth noting however that Joseph McCarthy was doing the same thing at least as early as 1954. See this broadcast of Face the Nation from November 1954. He does this at about the 2:00 mark. Don’t know if he is doing this explicitly as a pejorative or not.
He uses it in this speech as well, which is obviously no later than 1952. Plus “Commiecrat Party!”