Catholics vote the same way in America, and seem liberal all over the globe.
I think that Rome does it’s politics more effectively than people think.
God really does give us Free Will. Do we love Him or reject Him. Ireland rejected Him. Let’s see how they do on their own. Certainly the Church’s leaders failed many. But the Church’s teachings, controlled by Him, have never changed done ill.
There isn’t a jot or tittle in Catholic doctrine that tells people to vote for “gay marriage”. The people who do that are doing so as rebels from Catholicism.