Was McClosky liberal or moderate? IIRC there was one more liberal candidate and a more conservative than Nixon candidate, but with all the things going on in 1972 neither one made a big splash at the time.
California Represenative Paul McCloskey was a liberal Republican from California who wanted to pull out of Vietnam imediatlely.
Represenative John Ashbrooke was a Conservative. He opposed "Nixon's China Game" and withdrawal and bombing halts in Vietnam.