Nah, leftist is better. Its less hateful and less insulting, while still accurately describing what they are.
See an actual liberal is almost identical to a conservative. For instance pro-life, pro-capitalism, anti-war (except in self defense), anti-totalitarianism (i.e fascism, socialism, or communism), pro-strong borders and legal immigraiton. The only real differences are that liberals believe in a larger government that can take care of people that can't take care of themselves (not people that flood our border).