There are many kinds of Catholics.
Holiday Catholics=Twice a year Christmas and New years
Cafeteria Catholics=Pick and choose what parts of the religion they wish to adhere too
Then there are those somewhere in between, and then there are Democrat Catholics.=Their real religion is the democrat party, but unfortunately before Obama the democrat party did not have a diety. Now that obama has changed that,they consider him a Diety and gave up on Jesus Christ and his teachings. Some still go to Church , like Nancy Pelosi and Joe Biden, but its all part of their political show.They are looking for the Catholic vote.
For some it is a tribal indentity. They view it as their duty as a Catholic to vote Democrate. My wife’s family is that way.