MEGAN MCARDLE: “The more members you have, the more members you have who can do something disastrous to your party’s public image. Couple that with the rise of electronic media, which gives whistleblowers more avenues to express themselves, and can magnify a peccadillo into a scandal almost overnight, and you have . . . the Republican Party of 2006. Or the Democratic Party of 2010, as our sister publication reports.”