There is a big difference in policy from our Catholic politicians running for president.
Senator Chris Dodd is a Democrat from Conn. who was quoted as saying that "faith has had a huge influence" on him.
On the other side of the policy divide is Sam Brownback, a Republican from Kansas. He says that "faith is a big part of the decision-making process".
Two things they agree upon is that the state has a right to use the death penalty (which is not against Church teaching on the subject - see here for more about that) and that there needs to be a better dialogue in political circles.
For a full story on the two men and their differences they have, CNS has a good article on them.