Mayor candidate Keane Duncan has hailed a "new chapter for devolution" this Yorkshire Day.
He said the £540m deal for York and North Yorkshire signals "a major step forward" in transferring power from Whitehall to Yorkshire.
But he called "wider, fairer and deeper" devolution and "true equality with the big city regions" to unlock Yorkshire's full potential.
Speaking on August 1, Keane said: "This Yorkshire Day we can beam with pride at what our county has achieved. York & North Yorkshire’s £540m deal signals yet another major step forward in transferring power from Whitehall to Yorkshire.
"More investment, more matters determined here, by the people who know Yorkshire best. A new chapter for devolution in God’s Own County.
"But we can do so much more to reverse the centralised decision making that is holding back the UK’s growth, and this Yorkshire Day we must re-double our fight to further empower our county.
"We don’t need special treatment to succeed here in Yorkshire – just our fair share.
"That means wider devolution, deals for all parts of Yorkshire. It means deeper devolution, even more matters determined by local people.
"And it means fairer devolution with a guaranteed and transparent settlement for Yorkshire, true equality with the big city regions.
"Through wider, fairer, deeper devolution we can build an even stronger Yorkshire and unlock the full potential of all five million of our people."