Emergency budget 50 days within poll win - Cameron

Conservative Party leader, David Cameron, looks on during a news conference in London November 4, 2009.

LONDON (Reuters) - The Conservative Party would carry out an emergency budget to tackle the country's record deficit within 50 days if it won the parliamentary election, leader David Cameron said on Sunday.

The centre-right Conservatives are widely expected to win the election, due by June, and have already said they want to cut spending by 23 billion pounds by 2015.

Cameron also said the Conservatives would set out plans to get the economy going again through business investment.

"What I can say today is that we would consider within 50 days of taking office, if we won the election, we would have an emergency budget," he told the BBC's Andrew Marr Show.

"An emergency budget that, yes, would be about getting the deficit under control and having a credible plan...but it should also be a budget that goes for growth, that gets the economy moving again."

Cameron said it would be not so much a "big bang as a big plan."

"What you need is a plan to get the deficit down, you have got to demonstrate to people that you are serious by taking some steps in your first budget and you set out those steps," he added.

Failure to cut the deficit could see interest rates rising and the economy tipping back into recession, he said.

The budget deficit is set to exceed 12 percent of gross domestic product this year, raising concerns on markets about the future management of public finances.

Cameron repeated his party's intention to freeze public sector pay, trim benefits and seek efficiencies to help reduce the deficit.

The economy would be boosted by measures such as cutting the rate of corporation tax down to 25p and giving start-ups a national insurance break on their first 10 employees.

"Let's get confidence and credit flowing again, dealing with the deficit, getting the economy growing, they are compliments, they are not substitutes. We need to do both of them," he said.

"We need a government with the power and long-term vision to get on with it."

Chancellor Alistair Darling said Cameron wants growth, but at the same time opposes government action on the economy.

"He has called for cuts now, at the worst possible time since they would choke off the recovery," he said in a statement.

The Labour Party, which has been power since 1997, promised to halve the deficit over four years when it set out its legislative programme in the Queen's speech last week.

But the financial markets will have to wait until the prebudget report on December 9 for more details.

Where to target tax rises and spending cuts to reduce the deficit will be a central theme in the election.

Brown says Conservative plans to cut the deficit more quickly would endanger Britain's recovery from the longest recession on record, adding that economic stimulus measures would remain in place until recovery was assured.

(Editing by Jon Loades-Carter)