Mitt Romney raised a whopping $10.25 million in one day during a Nevada fundraiser, a state that will be crucial to his campaign strategy to win the 2012 GOP nomination, according to his presidential exploratory committee.

"We are overwhelmed by the outpouring of support for Governor Romney's campaign," said Romney's finance chair Spencer Zwick. "The results are a strong indication of the national enthusiasm for Governor Romney and his pro-jobs platform.

"As today's event makes clear, Governor Romney will have the resources to be competitive and to spread his jobs and economy message," added Zwick.

Dubbed "The National Call Day" by Romney's staff, 700 to 800 supporters gathered at the Las Vegas Convention Center, "in a space the size of two football fields," and placed calls around the country throughout the day to generate financial support. Romney also met with the volunteers and even had the event broadcast on his Facebook page.

"Our president, likeable as he is, has done all the wrong things to turn the economy around, " Romney said.

Initially Romney's team hoped to raise $3 million; instead they far exceeded their goal.

New Hampshire, Nevada and Florida are three early primaries at the center of Romney's plan to capture the GOP nomination.

The former Massachusetts governor will officially announce his presidential campaign this summer.