Plaid Cymru has continued its election campaign with a series of attacks on Labour's commitment to Wales.

Speaking today, Cynog Dafis, Plaid's policy director, accused Labour of a lack of credibility in Wales.

"After four years, it is clear to most in Wales that new Labour are no better than the old Tories," he said.

He also accused Labour of ignoring Wales' communities and said his party was the only choice for those who wanted a strong voice for Wales in Westminster.

Plaid cites as evidence that Labour has "turned its back on Wales": the lowest levels of public spending as a proportion of GDP since 1964 in the 1999/2000 financial year; GDP per head in Wales has fallen to 80 per cent of the UK average; and a lack of commitment to pensioners and ex-miners.

The attack marks the continuation of Plaid's campaign to woo voters disenchanted with Labour. Yesterday Plaid used a debate in the National Assembly to attack Labour for not helping the steel industry.

Responding, Labour have argued that Plaid's sums don't add up in Wales or for the UK, and claimed there is a £3 billion gap in their figures.

David Hanson said: "They kicked off the campaign by refusing to set out their costings. Now, under pressure, they have trotted out a figure of £6.3 billion."

"Unfortunately, this price tag is just as implausible. A costing, based on official figures and those used by the Nats - of just six of their commitments provides a total of £9.3 billion - £3 billion more than their estimate."