The Church is not a political entity and to use such politically-loaded phrases such as "conservative" or "liberal" is the wrong way in which to describe anybody in the Catholic Church.
The general usage of these words derives from the political spectrum and so they have a lot of baggage associated with them. Even in Catholic circles, they are tossed around.
For a prime example, see Richard McBrien, who goes after "conservatives" and the Pope - saying the time of conservatism may be over because of recent scandals. This is a horribly argued article, because McBrien fails to mention (among other issues) that most of the problems came from those that would never describe themselves as "conservative". Also, his agenda is obviously one of opposing all that he attacks in the article, so that he comes across as petty and angry.
Don't get me wrong, you can mess up in any direction. Some examples are found in the Legion of Christ (suffering a purification from scandal), the Society of St. Pius X (which has seperated themselves from the Church over Vatican II and liturgy - among other issues), in addition to other groups that some consider "conservative".
Being an "extreme" Catholic can be deadly in any direction.
Thus, the Church is too big to be caught up into political language. We lose the mystery and make it a purely human enterprise.
If someone asks me if I am conservative or liberal, I answer -
"I am Catholic. I believe what the Church teaches, proclaims, and professes."
Liberal and Conservative don't fit into such a view.
One other point. Be wary of getting good commentary out of articles such as the one linked to above. To many people have agendas to push - McBrien's agenda is just one of many, and one that is old, failed, and stale.