Why has the Catholic vote in Texas migrated from the Democratic Party to the Republican Party?

Social issues

Explanation:

Many of the Catholic voters in Texas migrated from the Democratic party to the republican party because of the social issue they were facing. The lack of economic opportunities, religious conflict, lack of security turned them to move toward the Republican Party. The Republican Party so far has kept to their promise in providing opportunities to the people. Texas is conservative, which promotes the traditional social institution and preserving it from the modernism (the Democratic Party).