Weeks before Cadman died of cancer, the independent lawmaker stood up in Parliament to cast the deciding vote that spared former Prime Minister Paul Martin's Liberals from heading into an election.
Cadman's widow, Dona Cadman, said her dying husband told her the Conservatives tried to bribe him.
"Two gentlemen had visited him, offered him a $1 million dollar life-insurance policy and a few other things," Cadman told CTV in an interview.
Dona Cadman, who is running for the Conservatives, she says she has no regrets about going public — even if it puts her in an uncomfortable position.
"They tried to bribe my husband, and yet I am running for that party. This makes perfect sense to me."