NDP Leader Roger Duguay, pictured here on election night, says he will leave the party altogether. (CBC)Former New Brunswick NDP leader Roger Duguay says he is leaving the party altogether because of the way party veterans feuded with "outsiders" who worked on the fall election campaign.

Duguay, who resigned as party leader last week, told Radio-Canada he had difficulty with the feuding between some party veterans and others he called — in French — "the famous team of outsiders."

The NDP failed to win a single seat in the provincial Sept. 27 election. However, under Duguay's leadership, the party won more than 10 per cent of the vote — more than double the party's showing in the 2006 election.

Dominic Cardy, the party's campaign director, told CBC News that several party organizers moved into New Brunswick for the campaign, but many were originally from the province.

He didn't deny that some veterans were pushed aside.

"There were certainly people who were around the party for a long time who resisted change, as happens in any political party," Cardy said Tuesday.

He said many of the party members who moved for the campaign will stick around to continue rebuilding the party.

Duguay was not able to win a seat in the northeastern electoral district of Tracadie-Sheila, even though he spent nearly the entire 32-day campaign period there.

The New Democratic Party had roughly 40,000 votes in the September election. The party has been shut out of the provincial legislature since its former leader, Elizabeth Weir, resigned in 2005.

The party will hold a leadership convention within six months.