There is a Marxist explanation for all this. Groucho, of course, not Karl.

In Indiana, a Republican Congressman resigns after promoting but not practicing abstinence with a woman on his staff.

In Connecticut, a Democratic Senate aspirant is revealed as a Vietnam draft evader after years of “misspeaking” himself into the role of a war veteran.

In Pennsylvania, a Republican-turned-Democrat is turned out by his new party after decades of bipartisan tap-dancing, as one of the state’s House seats held by the late King of Pork is retained by a Democratic protege.

In Kentucky, the Senate Minority Leader’s choice for a colleague is trounced by a Tea Party lover named at birth for one of the crackpot political philosophers of the past century.

If there were a Glenn Beck blackboard to diagram yesterday’s news, the resulting picture would resemble the Marx Brothers’ classic stateroom scene, in which characters keep crowding into a small space until they spill out for the cameras in a tangled heap.

In coming days, there will be tons of political analysis about what’s happening to Democrats and Republicans this year, but pathology may be more to the point.

MORE.