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

Lemma update_elections_data_appendEntries_preserves_allEntries :
forall net h t n pli plt es ci x,
In x (allEntries (fst (nwState net h))) ->
In x (allEntries (update_elections_data_appendEntries h (nwState net h) t n pli plt es ci)).