Except that there is, it has gone democrat in every presidential election in our history, with 5 exceptions, and will probably always go democrat in the future. That is a predictable 'Catholic vote'.
Like I said there is no such thing as the “Catholic vote”,
irregardless to what you think.
Even with the number of “catholics” voting for democrats, the number that vote for conservatives dwarf Southern Baptists are any other of the alphabet soup protestant denominations.
Jimmy Carter, Bill Clinton twice, and Obamagabe twice, all so called protestant democrats, won because protestant voters voted for them. Protestants put them in the White House. There are more protestants than there are Catholics in the United States. If you capture the protestant vote you don’t win.