[fieldmarshaldj]

Those were the three, yes. Cronin was a moderate (and he had the notoriety of beating John Kerry in 1972, but lost to Paul Tsongas in 1974), Heckler was a liberal/moderate, and Conte was outright left-wing. I can’t recall if Conte was pro-life (of course, Ted Kennedy was pro-life until the ‘70s, too), although he did apparently vote against DC funding for abortions in the late ‘80s.

[Impy]

Was Joe Martin the last out and out conservative?

[AuH2ORepublican]

Conte and Heckler were renown liberals (especially Conte), but both were pro-life, and voted that way throughout their congressional careers:

Conte’s abortion-related votes:

http://nchla.org/keyresults.asp?state=&locale=checkcongper&congper=Conte&zip=&plusfour=&year=1973&year2=1991&issue=&terms=-1&bills=-1&vote=&displaysize=10&displaystarts=1&displaystarth=1&submit=Search+Key+Votes

Heckler’s abortion-related votes:

http://nchla.org/keyresults.asp?state=&locale=checkcongper&congper=Heckler&zip=&plusfour=&year=1973&year2=1983&issue=&terms=-1&bills=-1&vote=&displaysize=10&displaystarts=1&displaystarth=1&submit=Search+Key+Votes

Cronin was pro-life as well:

http://nchla.org/keyresults.asp?state=&locale=checkcongper&congper=Cronin&zip=&plusfour=&year=1973&year2=1975&issue=&terms=-1&bills=-1&vote=&displaysize=10&displaystarts=1&displaystarth=1&submit=Search+Key+Votes