Prime Minister David Cameron (pictured) came under pressure today to suspend a second Tory MP from his party in as many weeks.
Greenpeace activists secretly filmed Daventry MP Chris Heaton-Harris, the campaign manager for the Tory candidate in tomorrows's byelection, admitting that he had encouraged a rival to join the race.
He said he had told rabid anti-environmentalist and Daily Telegraph columnist James Delingpole to stand on an anti-wind farm platform.
"I'm running the Corby by-election for the Tories … and Delingpole, who is my constituent, and a very good friend … put his head above the parapet but won't put his deposit down. It's just part of the plan.
"Please don't tell anybody ever," he added.
Green Party leader Natalie Bennett said: "If Mr Heaton-Harris does not immediately resign, David Cameron should insist that he be expelled from the party."
The Conservatives were forced to suspend Nadine Dorries last week when she jetted off for Australia to take part in ITV's I'm a Celebrity, Get Me Out of Here.