Voter's Edge is the product of MapLight, a non-profit foundation-funded organization which documents political contributions and presents them in an easily accessed online format. Here's their widget which tells you all about California ballot propositions:
And below you'll see the MapLight widget for Berkeley.
We must emphasize, however, that we haven't fact-checked the information here, which is compiled by and for the berkeleyside.com blog under contract with MapLight. Also, in many categories, like "Endorsements", the information is incomplete.
We've taken just a quick look, and have already found one error: Street Spirit's cartoon on Anti-Sitting Measure S does not belong under Editorials in the "Yes" column—they're emphatic opponents, as any Street Spirit reader might guess. Also, Osha Neumann's Public Comment piece, listed under Measure S "No" editorials, is not technically a Planet editorial, though we're proud to host it nonetheless and agree with his opinion..
If you find any other mistakes, please let us know at firstname.lastname@example.org, and we'll post corrections. And if you can supply missing information, please tell us that too.
UPDATE: The Street Spirit cartoon about Measure S has been moved to the "No" column as of Wednesday morning. Please continue to report errors and omissions.