A bit cynical take here? What if people vote for GOP for other reasons and because there is a two party system they have to weight this issue amongst others.
I have one electric distribution utility provider. They use service trucks that have internal combustion engines. Suppose I was passionately pro-EV and against ICE vehicles; it would still not be a contradiction that I purchase my electricity distribution from that one available grid provider. "He's buying from them, so clearly he must support their use of ICE vehicles."
I can virtually guarantee that you disagree with at least one position that the candidate you voted for has taken. They're your representative, not your agent.