Well, I have never held any inherent antagonism toward back bench M.P.s of any party. It's the cabinets who I usually rant about.
Over the years, I have had many more close friends who are Conservative rather than Labour. Many more.
I have tried making friends with staunch Labour supporters, but they just don't - usually or typically - have any sense of humour. Intelligent Conservatives on the other hand are often a very good laugh - which is more important to me than almost anything else when it comes to surviving a party - with a lower-case P.
I always have been nice to everyone - well, not everyone, but most.