**Steps to replicate the issue** (include links if applicable):
* Add a global username (with a lot of SUL links; in this case I used [[https://meta.wikimedia.org/wiki/Special:CentralAuth/ArielGlenn|ArielGlenn]]) to the override list for a global election (in this case https://vote.wikimedia.org/wiki/Special:SecurePoll/votereligibility/1364 )
* Save the page
**What happens?**:
* A DBTransactionSizeError is thrown:
```
To avoid creating high replication lag, this transaction was aborted because the write duration (3.800598859787) exceeded the 3 second limit. If you are changing many items at once, try doing multiple smaller operations instead.
[bf111084-04b7-4f02-bbcf-808b85e94a3b] /wiki/Special:SecurePoll/votereligibility/1364/edit/include Wikimedia\Rdbms\DBTransactionSizeError: Transaction spent 3.801s in writes, exceeding the 3s limit
from /srv/mediawiki/php-1.39.0-wmf.25/includes/libs/rdbms/loadbalancer/LoadBalancer.php(1741)
#0 /srv/mediawiki/php-1.39.0-wmf.25/includes/libs/rdbms/lbfactory/LBFactory.php(410): Wikimedia\Rdbms\LoadBalancer->approvePrimaryChanges(array, string)
#1 /srv/mediawiki/php-1.39.0-wmf.25/includes/MediaWiki.php(671): Wikimedia\Rdbms\LBFactory->commitPrimaryChanges(string, array)
#2 /srv/mediawiki/php-1.39.0-wmf.25/includes/MediaWiki.php(641): MediaWiki::preOutputCommit(RequestContext, Closure)
#3 /srv/mediawiki/php-1.39.0-wmf.25/includes/MediaWiki.php(928): MediaWiki->doPreOutputCommit(Closure)
#4 /srv/mediawiki/php-1.39.0-wmf.25/includes/MediaWiki.php(562): MediaWiki->main()
#5 /srv/mediawiki/php-1.39.0-wmf.25/index.php(50): MediaWiki->run()
#6 /srv/mediawiki/php-1.39.0-wmf.25/index.php(46): wfIndexMain()
#7 /srv/mediawiki/w/index.php(3): require(string)
#8 {main}
```
**What should have happened instead?**:
* The username should be added.
**Other information** (browser name/version, screenshots, etc.):
* This can be worked around by adding only a local instance of the user to the override list, e.g. ArielGlenn@metawiki, and having the user vote from that wiki directly.
* See also the very similar request {T289797} which should resolve this issue
{F35488284}