Wave of NDP in strong second place in the poll (Reuters)

WINDSOR, Ontario (Reuters) - support for the new democratic party climbed within six points of the decision of conservative in an opinion poll Monday which showed Prime Minister Stephen Harper with a tenuous hold on power to the left of the Canada.

The Conservatives, who hope to obtain a majority government in the vote on May 2, remain confident of election victory despite the late boost campaign by Democrats.

The left-leaning NDP have traditionally been less conservatives and Liberals. But his appeal was turned under the leadership of Jack Layton, who supports tax relief for small businesses and for the hiring of new employees.

EKOS survey from Monday more 3,000 Canadian voters put support for the NDP 28%, compared to 33.7% for the Conservatives and 23.7% for the Liberals, which are currently most major opposition party in the Canada.

The NDP would not more seats in Parliament that the Conservatives - they could end up with 100 seats then party Harper was 130.

But its earnings could make the Conservatives, who won the minority governments in 2006 and 2008, vulnerable to the possibility that the NDP and Liberals can agree to work together and push the power.

Minority governments need support of at least one opposition party to pass legislation and remain in power.

"It is difficult to imagine a (conservative) Government decrease in 130 seats would be able to maintain power against a clear majority of seats and an advantage in popular support for the NDP and the Liberals," pollster Frank Graves EKOS said on the website iPolitics.ca.

Much of the gain came in Quebec over separatist Bloc québécois, but surveys indicate the NDP take stronger foot in the English-speaking Canada, as well.

Serious "the idea that you could have a coalition led by Jack Layton seems absurd, but that is what suggest the numbers," said in a commentary on the survey.

The NDP, founded in 1961, labour, party has governed in several provinces, but never won power nationally. In addition to tax cuts, Jack Layton submitted additional spending on education and environmental and social programs.

The Conservatives have argued throughout the campaign that they need a majority to accomplish things in Ottawa.

Otherwise, they said the opposition parties would team up and attempt to take power with a coalition Government led by Liberal leader Michael Ignatieff.

Harper, a gathering of campaign in a district held by the NDP in Windsor, Ontario, the Detroit River, the NDP and Layton finger lines attack it is normally used against the Liberals and joked on the changing fortunes of the opposition.

"It is not as clear which is supposed to work for the who in this arrangement," Harper said, referring to any future cooperation by the opposition parties in Parliament.

The Liberals have also stepped up their attacks on the new Democratic Party, but Ignatieff refused that he was captured in a tightening of policy between other parties.

"I think that I got running room it is," Ignatieff told journalists in Thunder Bay, Ontario.

Layton, speaking to journalists before the release of the Ekos poll, scoffed at the idea that vote splitting between his party and the Liberals will eventually help the conservatives.

"It is the absurd proposal that somehow you are really a choice but vote for one or other of the two parts old-school", Layton told journalists in Saint John, New Brunswick.

The EKOS survey has a margin of error of more or less 1.8 percentage points, 19 times out of 20.