Marc Gunderson, an Orbital executive, also gave Ruppersberger the maximum donation of $2,400 in 2010.
Tickets for the Sept. 8 event are expected to start at $2,300, the maximum donation permitted by law for the primary election by an individual.
Mr. Romney, a former governor of Massachusetts, is not only raising less money than he did four years ago, but so far he has been relying more heavily on a smaller group of donors, asking many of them to write checks now for the maximum donation that they can give during primary season.
Several local gay rights groups held a fundraiser for him last month at the Stonewall Inn, and the political action committee for the Human Rights Campaign gave him $5,000, the maximum donation allowed.
The check was for $10,000, less than one-fifth of the maximum donation allowed under New York State law.
Greg Gianforte, who was running as the GOP candidate for governor, and his wife, Susan, each gave Rose $170, the maximum donation.
They have each given the maximum donation allowed, $2,300.
It essentially means a doubling of the maximum donation to each candidate.
Eisenberg also made the maximum donation allowed, $30,400, to the Republican National Committee, he told HuffPost over the phone.
