Just for the sake of argument, lets assume that calvinism is correct.
In that case liberalism, as well as every other sin, is all God’s fault.
If we have no free will to respond to God’s leading with the choice to do good then we have no free will to reject God’s leading thusly doing evil.
Either we can choose to accept (or reject) God or we can choose to do nothing an sin is God’s fault.
Seeing as the bible tells us to “choose life”, I’ll side with God on this one and say we have a choice.
The point is, God knows who will choose life. We don't. That's why we must evangelize. As Christ Himself said, "You haven’t believed in me even though you have seen me. However, those the Father has given me will come to me, and I will never reject them. For I have come down from heaven to do the will of God who sent me, not to do my own will. And this is the will of God, that I should not lose even one of all those he has given me, but that I should raise them up at the last day. ~ John 6:36-39