I live in a highly liberal area, it's difficult to find a church that has not brought political agenda's to the pulpit. Many of these churches (and I have visited many of them), sounds more like a CNN news segment than a Biblical sermon. What I have noticed about "liberal" Christianity is they are more likely to toss out scripture, for instance, many of the more liberal denominations allow homosexuality into their leadership, they also allow sin inside their churches (for the sake of acceptance), they support people who support abortion, gay marriages, homosexuality and are, in my opinion, easily deceived to view issues without a Biblical bases.
I took a new neighbor to church, I did not realize she was liberal, the sermon was on true Biblical marriage, between a man and a woman, she hated the sermon and she never went back, she said it was too "judgy". LOL She considers herself a Christian but admits to saying she throws out the parts of the Bible regarding this issue because "the Bible has been changed too many times" - basically you can't trust the very Word of God because it was "changed".
What I have also noticed is, the more liberal Christians rely MORE on the government (wanting it to grow, wanting the government to solve the problems INSTEAD of God). A person can argue all they want, but this IS the truth. Liberalism likes big government, likes rules, wants to be ruled.
I also went to a more conservative church, it was the same, all he talked about were social issues. If people show up to your church on Sunday morning and you are the preacher - we want to hear about God from His Word. Not what CNN reports day in and day out.
That's my take.