I'm a boomer too 
I've always been left wing (used to be a strong Labour voter
) - influenced by my parents who were always very political aware (my dad a doctor, my mum a teacher - so the NHS and state education were key for them - and me).
I remember despairing to them in 1992, after the election that Major unexpectedly won, that middle England would never stop being so self-centred and that we were doomed to an eternity of Conservatives (I was living in England at the time)
. They told me to have faith and that things would change.
I moved back to Scotland in 1994, to be with now dh. And then 1997 happened 
My parents took longer than me to convert to the idea of Scottish independence. For them the Iraq War was the last straw.