When I lived in Minnesota, I was invited for Thanksgiving by some liberals, and we did keep it civil. I must clarify however that these were old school Hubert Humphrey liberals, and they were pro-2A as well (as was Old Hubert).
Humphrey seems to be the last honest democrat I can recall. Saw him at a campaign stop in '68 at the Astrodome in Houston when i was 14. Actually went to see Frank Sinatra, Nancy Sinatra and Trini Lopez. ;o)