Proof using.
ctsc_unchanged.
- apply leaderLogs_update_elections_data_requestVote.
- find_apply_lem_hyp handleRequestVote_type_term. intuition.
- find_apply_lem_hyp handleRequestVote_type_term. intuition. right. congruence.
Qed.

(* Specifications: *)
Lemma leaderLogs_currentTerm_sanity_candidate_request_vote_reply :
refined_raft_net_invariant_request_vote_reply leaderLogs_currentTerm_sanity_candidate.