Mitt Romney’s campaign for president announced today it raised $18.25 million in the second fundraising quarter that just ended.

This is an impressive haul by most measures, as it should outpace the rest of his Republican primary rivals combined.

But Mitt failed to outdo his own fundraising haul from the same period in his abortive 2008 bid, when he pulled in $21 million in the second quarter of 2007 and was far less well known nationally.

Other potential candidates–including Texas Gov. Rick Perry–might see the frontrunner’s position as vulnerable and take the plunge this summer.

The Romney camp’s full statement is below:

ROMNEY FOR PRESIDENT REPORTS $18.25 MILLION IN TOTAL RECEIPTS FOR THE SECOND QUARTER

Boston, MA – Today, Romney for President announced it raised $18.25 million in total receipts for the Second Quarter ending June 30, 2011. This total represents only primary contributions; the campaign did not raise general election funds.

Romney for President National Finance Chairman Spencer Zwick said, “Voters are responding to Mitt Romney’s message that President Obama’s policies have failed and that we need new leadership in Washington. Our fundraising for the second quarter represents the strong support Mitt Romney has across the country.”

Facts About Romney For President’s $18.25 Million In Second Quarter Fundraising

Amount Raised In Primary Contributions: $18.25 Million

Cash On Hand In Primary Contributions: $12.6 Million

Primary Contributions Received From All 50 States And Washington, D.C.

Second Quarter Burn Rate: 31%