No.  This is largely untrue.  What has changed is how people define the terms conservative and liberal when asked, and the terminology is so unclear that it now means very little.  For instance, at one time there were Christian liberals but not any more; now there are only Christian conservatives and non-Christian conservatives.  At the same time some priests and preachers have become less conservative as they fight for market share.   Above all we should not let newspapers define those terms.