Proof using.
unfold update_elections_data_requestVote.
intros.
repeat break_match; auto.
Qed.

Lemma update_elections_data_client_request_cronies :
forall h st client id c out st' ms,
handleClientRequest h (snd st) client id c = (out, st', ms) ->
cronies (update_elections_data_client_request h st client id c) =
cronies (fst st).