The Trinity is a doctrine not taught in the Bible but adopted by many in Christendom and originated as a part of pagan worship. Christendom simply picked up the idea to win over the pagans. They suddenly made Jehovah, Jesus and the Holy Spirit 3 persons in one godhead. (4th C. C.E., Council of Constantine). ~ for more info see jw.org
The Bible and politics do not go hand in hand. Remember Jesus said "My kingdom is no part of this world." We can trust the Bible's clear wise advice every-time. You will not regret your decision if it is based on the Bible's wisdom and counsel.