A quick word from the New Yorker about the weird verbal tic of movement conservatives when talking about the Democratic Party.
“Democrat Party” is a slur, or intended to be—a handy way to express contempt. Aesthetic judgments are subjective, of course, but “Democrat Party” is jarring verging on ugly. It fairly screams “rat.” At a slightly higher level of sophistication, it’s an attempt to deny the enemy the positive connotations of its chosen appellation. During the Cold War, many people bridled at obvious misnomers like “German Democratic Republic,” and perhaps there are some members of the Republican Party (which, come to think of it, has been drifting toward monarchism of late) who genuinely regard the Democratic Party as undemocratic. Perhaps there are some who hope to induce it to go out of existence by refusing to call it by its name, à la terming Israel “the Zionist entity.” And no doubt there are plenty of others who say “Democrat Party” just to needle the other side while signalling solidarity with their own—the partisan equivalent of flashing a gang sign.
Update: This pattern turns out to be older than I thought.