Attempting to run extensions/SecurePoll/cli/dump.php on mwmaint1002 as (previously) described on Wikitech throws an error, since it no longer accepts --votes as a parameter:
foks@mwmaint1002:~$ mwscript extensions/SecurePoll/cli/dump.php --wiki=enwiki --votes '2018 English Wikipedia Arbitration Committee election' Notice: Undefined variable: wmgSessionStoreHMACKey in /srv/mediawiki/wmf-config/CommonSettings.php on line 474 Unexpected option votes!
...followed by the --help dialog.
There does not appear to be a parameter one can use to get this information into a dump (possible that I'm just missing it, but it's not addressed in the script's --help).