The Watford Observer is reporting that the Conservative candidate there, Cllr Ian Oakley, was arrested in connection with a hate campaign directed at the local LibDems.
Amongst the accusations - and nobody has been found guilty yet so don't jump to conclusions - are the sending of poison pen letters to LibDem councillors and the slashing of car tyres. Hertfordshire Constabulary's crime taskforce has been looking into the crimes in an investigation called Operation Tuition.
Watford is a Labour-held three-way marginal seat.
10.30pm: The Sunday Times is reporting that Mr Oakley has resigned.
