Church attendance is just another part of being a baptized member of the Catholic denomination, just as voting democrat is for Catholics in America, and whatever they vote for in the catholic nations of Latin America and Mexico.
Catholic voting in America used to be reliably Democrat back in the day.
But these days Catholics demonstrate the same voting patterns as most other Americans and usually race is the biggest factor.
In the last presidential election, 59% of white Catholics voted GOP, about the same as the general white population.
If you happen to be both a regular church going Catholic and non-Hispanic white, there is probably a closer to 70% chance you voted GOP in the last presidential election. Same would apply to regular church going white Protestants.
Tell me your race and how often you attend church services, I can more often than not predict how you vote. Back in the day, socio-economic-status SES (class) more often than not determined how you vote. These days it is mostly based on race and regular church attendance.
And a strong correlation between monthly, biennial, or less frequent church attendance, and liberal political and social views.