Proof using.
intros.
unfold update_elections_data_client_request.
repeat break_match; repeat find_inversion; auto.
Qed.

Lemma update_elections_data_appendEntries_cronies :
forall h st t h' pli plt es ci,
cronies (update_elections_data_appendEntries h st t h' pli plt es ci) =
cronies (fst st).