Dissolution of Parliament by Lord Grey after defeat of Reform Bill. Subsequent election, fought on question of support for whole Bill, gives majority to Whigs.
Citation:
Editors. "Reform Bill checked: Parliament is dissolved".
The Literary Encyclopedia. First published 01 January 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=4686, accessed 23 May 2013.]