Norfolk County Council's Conservative Cabinet member for Economic Development Ann Steward has lost to UKIP's Paul Smyth. She was the member for Swaffham.
Regardless of the result in Thursday's election, Northamptonshire will have fewer county councils because of boundary changes.
The Tories have been sent a warning in their traditional Essex heartland, losing nine county council seats to a bullish UKIP.
Suffolk County Council has been Conservative-controlled since 2005. On Thursday there were elections for 75 councillors.