My friend was a democrat as was her entire family. She had always voted that way, although we never got into arguments, she and I both made comments from time to time re how we voted. One day, I was talking to her about someone else and mentioned their voting and things they said. As a throw away (almost) comment I said "I don't even know how one can be a Christian and vote for democrats because they are for everything, totally opposite from what the Bible teaches". Then I named things like abortion, etc.
Sometime -- maybe 6 months passed without another political conversation. Election day (actually the primary) was approaching -- she called and asked me who she should vote for because she knew I kept up with what was going on. In that period of time, she had changed from dem to rep. and for the first time, she wasn't voting in the democrat primary but knew nothing about the reps running. She did this, on her own, without me ever saying another word to her about politics.
She is a very devout Christian and I guess she got to thinking about what I said and realized it didn't matter how her family had always voted. Her entire, immediate family, changed from democrat to Republican.
Excellent work!