UKIP have gained Brightlingsea bringing their total council seats in Essex to four.
At the last County Council election the party didn't win a single seat in Essex and had a 3% share across the county.
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.