The federal Liberal party says Stephen Harper's Conservative campaign must never use the RCMP as a political tool.

Liberal handlers are reacting to reports that a Tory official ordered RCMP officers on Harper's detail to prevent accredited journalists from speaking with Surrey-North Conservative candidate Dona Cadman.

The incident followed a rally with Harper and Metro-Vancouver Conservative candidates in Surrey, Tuesday night.

A Liberal release says the job of the RCMP is not to prevent the Conservative Party from being embarrassed but to protect the Prime Minister against genuine physical threats.

Journalists want to speak to Cadman because of her comments that her dying husband, Chuck Cadman, was offered a lucrative life-insurance policy to side with the Tories in a 2005 confidence vote.

Requests to interview Surrey-North candidate Dona Cadman were laughed off by Harper's aides.

Speaking about the incident, a spokesman for the Prime Minister says there is no need for local candidates to be interviewed by the national media.