Proof using.
intros.
unfold update_elections_data_appendEntries in *.
repeat break_match; subst; simpl in *; auto.
Qed.

(* Specifications: *)
Lemma update_elections_data_clientRequest_cronies_new :
forall h st client id c,
cronies (update_elections_data_client_request h st client id c) =
cronies (fst st).