Conservative leader Erin O'Toole facing criticism from third-party supporters

Erin O'Toole insists the Conservative caucus is united behind his leadership.

But can he be as confident about the party's grassroots?

The reaction from a handful of third-party organizations, which represent swaths of the Conservative faithful, suggests the answer is likely a no.

"If they keep throwing their base under the bus, there's not going to be anyone on the bus," said Sheldon Clare, president and CEO of the National Firearms Association, adding that he remains a Conservative member for "right now."

What path the Conservatives decide to tread next as Prime Minister Justin Trudeau enters his third mandate is at the heart of a new campaign launched by the National Citizens Coalition (NCC), a group once led by a young Stephen Harper, before his time as Conservative leader and later prime minister.

The campaign emphasizes the need to get back to promoting "conservative values," such as freedom and less government.