Justin Trudeau's leadership bid backed by LeBlanc

Justin Trudeau's Liberal leadership campaign has received a big boost from a longtime friend who's decided to put his own leadership ambitions aside.

New Brunswick MP Dominic LeBlanc endorsed Trudeau's candidacy at an event in Dieppe, N.B., saying "the best way to make a contribution would be to join my friend's campaign."

"I intend to work tirelessly... to support Justin's bid for the Liberal leadership and prepare the way for Justin Trudeau to become one of Canada's great prime ministers," LeBlanc said.

LeBlanc thanked the large crowd for supportinghis leadership ambitions in the past. LeBlanc ran briefly for the leadership in 2008 before stepping aside for Michael Ignatieff.

"I have known Justin probably as long as I have known anybody else," LeBlanc said. "I have seen up close Justin's toughness, his work ethic."

"He's a natural leader," LeBlanc told the packed audience, noting that 200 people had to wait outside because they couldn't get in. "He's a uniter. He knows how to build a team and how to motivate Canadians."

"Having Dominic beside me touches me deeply and is very important to me," Trudeau said, calling him one of the most talented MPs in the Liberalcaucus. "He is a major source of strength for our party."

Sources tell CBC News LeBlanc willplay a "big national role" in Trudeau's campaign.

Family history

The connections between the LeBlanc and Trudeau families go back60 years.

LeBlanc's father, former governor general and Trudeau-era cabinet minister Romo LeBlanc, was a close friend ofJustin's father Pierre dating back to the 1950s. Their mothers remain friends.

Dominic LeBlanc was a pall bearer at the funeral for the former prime minister.Justin Trudeau was a pall bearer at the funeral for the former governor general.

Trudeautoldthepacked hall that both fathers had taught their sonsthe value of public service.

Dominic LeBlanc is slightly older than Justin Trudeau: at 14, LeBlanc baby-sat Justin andhis two younger brothers (then 11, 9 and 7.)Trudeau spokefondly of LeBlanc teaching him how to make crank telephone calls as unruly youngsters, noting jokingly thatthey're both older now.

Friends, not rivals

This past summer, Trudeau's family spent two weeks withLeBlanc's family, with the upcoming leadership race very much on their minds.

Although he'd mused publicly about running again this time,LeBlanc made no effort to put together a campaign team and few Liberals actually expected him to take the plunge.

An insider close to Trudeau said no pressure was put on LeBlanc to stand aside. Speaking to supporters on Friday, LeBlanc spoke of his"period of reflection" thissummer when his wife in particular encouraged him to"play a big role in the future of our country."

The Trudeau rally in LeBlanc's Beausejour riding is the first Maritime stop in Trudeau's early touring.

After weeks of rumours and speculation, Trudeau made his candidacy officialpacked event in his Montreal riding on Tuesday night. He hit the road immediately for an early burst of well-attended kickoff events inCalgary, VancouverandMississauga, Ont.