authorized_voter_keypairs

raw details (from release v2.2.3):

{
  "name": "authorized_voter_keypairs",
  "properties": {
    "long": "authorized-voter",
    "value_name": "KEYPAIR",
    "takes_value": "true",
    "validator": "is_keypair_or_ask_keyword",
    "requires": "vote_account",
    "multiple": "true",
    "help": "\n                    \"Include an additional authorized voter keypair. May be specified multiple \\\n                     times. [default: the --identity keypair]\",\n                "
  },
  "isDeprecated": false
}