Another reason not to vote Conservative
Mr Cameron said he was prepared to support “targeted culling” of the animals to prevent them spreading bovine tuberculosis to cows and other farm animals.
He said a Conservative government would support a policy in England based on that already put in place by the Welsh Assembly.
Wales is embarking on the first badger cull in two decades in an attempt to control the spread of Bovine TB.
Farmers leaders have backed a cull in England but Labour rejected the move, saying it wants to experiment with vaccinating badgers against the disease.
The National Farmers Union says that more than 150,000 cattle have been slaughtered because of bovine TB during the past decade.
Mr Cameron told voters in Plymouth, Devon, that he was prepared to sanction the selective trapping and killing of badgers to combat the disease.