MEBYON Kernow has accused Tory and Lib Dem councillors of being "in denial" about the harm their own party's policies are having on Cornwall.
MK made the claims as it launched its election manifesto on Monday.
It said Cornwall needed councillors who will put the county first and not those who want to play "party political games".
Dick Cole, party leader and current Cornwall Councillor for St Enoder, said his party would fight for a better deal for Cornwall.
"It is a difficult time for local government in Cornwall. Funding cuts from the Conservative and Liberal Democrat coalition mean that, between 2011 and 2015, Cornwall Council will lose a massive £546 million in spending power," he said.
"This is having a devastating impact on the ability of the unitary authority to deliver services, and this is already adversely affecting the elderly, the young, those in need, and the ordinary working people of Cornwall.
"Councillors from the coalition parties are largely in denial about the harm being caused by the policies of their own Government, preferring to play party political games.
"We need councillors who will put Cornwall first and focus on defending the best interests of our local communities."
MK's manifesto states:
- It will demand a commission to investigate the full extent of Government under-funding of Cornwall and the needs-based funding requirement for Cornwall
- MK councillors will fight to protect funding for programmes and initiatives which seek to protect and enhance the living standards for those in need and the less-well-off
- It supports well-balanced planning policies which protect the Cornish countryside, while allowing appropriate developments that meet the needs of local communities
The full manifesto document is available here
