(CNN) – Less than a day after winning the Delaware Republican Senate primary in a surprising upset, Christine O'Donnell reached her earlier fundraising goal for the general election.
"We have surpassed our earlier goal of $500,000. What do you think? Can we hit $750,000?" O'Donnell tweeted Wednesday.
O'Donnell became the latest Tea Party-backed candidate this election season to defeat an incumbent candidate after she easily beat long-time Rep. Mike Castle in the contentious Senate primary.
Now, despite the skepticism many Republicans expressed as the election results came in Tuesday night – one Republican official told CNN the Republican party would be slow to give any money to O'Donnnell – she is enjoying an influx of support from prominent Republican leaders.
Republican National Committee Chairman Michael Steele told CNN Wednesday that he has instructed his staff to devote resources and money to help O'Donnell's campaign.
Senate Republican Leader Mitch McConnell also said he would support and donate money to O'Donnell. And National Republican Senatorial Committee Chairman John Cornyn pledged $42,000 – the maximum amount the NRSC can give – on O'Donnell's behalf.
Former Gov. Mitt Romney – and potential 2012 presidential candidate – also announced that his Free and Strong America PAC would be sending O'Donnell a $5,000 contribution.
O'Donnell now faces Democrat Chris Coons in the race to fill Vice President Joe Biden's former Senate seat.
–CNN's Frances Sanchez contributed to this report