Irrelevant!
You don't know how legislative bodies are organized, do you?
Even if Tisei's views on policy were identical to Tierney's, it would still be preferable to have Tisei in the seat, since he is going to caucus with the GOP. That has impact on who the Speaker is and how the committees are organized. All of which has impact on What Is to Be Done!
You folks want to elect a radical Socialist homosexual activist, you’re in the wrong party.
DEFEAT TISEI !