Wrap: It was just a two minute power outage, but it left the entire Capitol dark, including the House chambers where the State of the State address was going to take place in less than a hour.  

University of Missouri Chancellor Brady Deaton was among those startled by the dark while being interviewed by reporters.

Ameren UE spokesman Mike Cleary says the two minute blackout was caused by a malfunction during Ameren maintenance work.

Also, Cleary says the power outage affected government buildings, the Governor's mansion and several Jefferson City businesses.

Reporting from the State Capitol, I'm Rebecca Stephen.