Your knowledge is errant. All major Protestant denominations are Trinitarian.
Mea culpa. You are right. A quick glance at Wikipedia brushed away some of the cobwebs in the remote corners of my memory.
~ ~ ~
I’ll say it again, doesn’t matter...
Romney nor Obama belong to a Protestant ecclesiastical community.
“doesn’t matter...”
Well we will soon see about that. God will make that decision.
You mean a Protestant church.