From the California Digital Library:
In 2012, the UCLA Online Campaign Literature Archive team started using WAS [Web Archiving Service] to capture elections for local, state, and federal offices affecting the Los Angeles area, as well ballot measure websites from California state and local Los Angeles area elections.
They have now gone live with the collection: http://webarchives.cdlib.org/a/uclacampaignlit
Explore their comprehensive collection of 2012 candidate sites and ballot measures. For example, there are 26 sites from California candidates running for US Senate (18 sites from candidates running for California Senate), including Democrats and Republicans and candidates from a variety of other party affiliations. California candidates running for US House are equally well represented. In addition, both sides of California propositions 28-40 have also been archived. Finally, there is also a comprehensive collection of Los Angeles and Santa Monica specific election and ballot issues.