Currently, SecurePollContentHandler::getActionOverrides overrides ContentHandler::getActionOverrides to disable a number of actions for secure poll pages:

public function getActionOverrides() {
	// Disable write actions
	return [
		'delete' => false,
		'edit' => false,
		'info' => false,
		'protect' => false,
		'revert' => false,
		'rollback' => false,
		'submit' => false,
		'unprotect' => false,
	];
}

This results in attempting to perform any of those actions triggering nosuchactiontext, eg https://vote.wikimedia.org/w/index.php?title=SecurePoll:349&action=edit

Why exactly is info a write action?

More importantly, the display at https://vote.wikimedia.org/wiki/SecurePoll:349 includes links to View source and Page information, but neither of those links works - instead showing the viewer the error.

If the actions are not available, the links to them should also be hidden.