The Wheels Are Coming Off the Clown Car

A Wisconsin Democrat has left his party, leaving control of the state Senate in doubt:

State Sen. Tim Cullen, a moderate Democrat from Janesville, broke with his party’s caucus Tuesday, saying he may become an independent over what he felt were political “insults” by the Senate majority leader…

The immediate result of the defection is not known. Democrats took control of the Senate on July 16 by a 17-16 margin and are still moving into new offices. State Sen. Rich Zipperer, R-Pewaukee, is stepping down Aug. 6 to take over as Gov. Scott Walker’s deputy chief of staff, so even if Cullen leaves the party, Democrats will still hold a slim majority: 16-15-1.