Has opposition research finally reached a big fat dead end?

Not that there is no fresh dirt to dig up on candidates. Each day, the morning editions bring us additional sleaze, flip-flops, and embarrassments from the candidates’ pasts, some of which comes ladled from oppo-researcher notebooks. We learn about our candidates’ legislative histories, their leveraged buyout histories (that would be you, Mitt and Newt), their adventures on K Street (take a bow, Newt and Rick #2), the filth and fury discovered in their back pages (hello, Ron!), the casual racism of a parent (Rick #1), and their military resumes (if they have one). And if they’ve generated any sort of paper trail from tax liens, divorce proceedings, campaign-finance filings, or civil actions—or if there is reusable disgrace from past campaigns—we read and re-read all about it, too.