It's calling for Yorkshire to be 'given a voice' over things like our schools, roads, trains and hospitals.
The Yorkshire Party has taken the campaign for One Yorkshire devolution to the responsible Government Minister.
Sajid Javid, the Secretary of State for Communities and Local Government, attended the All Party Parliamentary Group for Yorkshire and Northern Lincolnshire on Tuesday.
Leader of the Yorkshire Party, Stewart Arnold, said: "The campaign for One Yorkshire has gained the support of business groups, the trade unions, the Archbishop of York and 18 out of 20 local council leaders in the county. Very soon we could be in a position to unleash the fantastic potential Yorkshire has, so we can finally get to work improving our NHS, investing in our schools, and bringing our roads and railways into the 21st century.
"We are asking all those who support the One Yorkshire deal to demand that Sajid Javid allows Yorkshire to come together and start working to improve our region.
"People across Yorkshire have been emailing Sajid Javid telling him it's time the Government stops playing politics and starts supporting Yorkshire being given a voice over things like our schools, roads, trains and hospitals."