In regards to myself, I'm probably just as liberal as I was a year or so ago, if not more, but I am better at expressing my ideologies and being open about my failures and/or blind spots on the political/moral spectrum. My core beliefs certainly haven't changed, but they're a healthier balance of hope & cynicism. I'm less prone to letting my want for people to be 'good' cloud the reality of the situation, much less prone to letting my cynicism override basic fact. It's just how the passage of time works. Eventually you grow and mature and what not. Having a job in the charity industry has probably strongly influenced me as well: you learn certain truths, both positive and negative, about the people you're serving and the government you live under. I guess I sound a lot more naive than I really am, but I'm not like that.
It's really all about the expression and implementation of my beliefs rather than the beliefs themselves - how to best 'enact social justice' and so forth.