Lemma votes_update_elections_data_request_vote : forall h st t src lli llt st' m t' h', handleRequestVote h (snd st) t src lli llt = (st', m) -> In (t', h') (votes (update_elections_data_requestVote h src t src lli llt st)) -> In (t', h') (votes (fst st)) \/ t' = currentTerm st' /\ votedFor st' = Some h'.