Over the past few days we've been telling you about a widely distributed private slate mailer labeled "Voter Information Guide for Democrats," boasting of "evaluations and recommendations" by the Democratic Party and others. The fine print notes that the slate mailer was prepared by Voter Information Guide, "not an official political party organization." The oil companies put up $300,000 for this deceptive mailer.

Today, the Oakland Tribune reported that, "U.S. Sen. Dianne Feinstein wants a...