Not long ago, the hard left website Democrat Underground cracked down on dissent and criticism of President Obama. The moderators of the forum established a long set of rules, trying to control the message to avoid causing harm to what they called the “progressive cause.” Generally speaking, the left is better at this kind of thing than the right. Privately they might squabble and disagree – and these disagreements show up more readily on the internet than they ever used to – but publicly the left is united and on message.

This topic came up on the Rush Limbaugh Show on Open Line Friday, with a caller asking “Why aren’t the right commentators all on the same page?”