Published: Oct 21, 2010 7:30 PM EDT
Updated: Oct 21, 2010 4:30 PM EDT

MIAMI (AP) - A major Democratic donor wants to disqualify GOP candidate David Rivera from the race for Florida's 25th congressional seat over questions about his income.

Attorney William Barzee, who supports Democrat Joe Garcia, filed a complaint Thursday in Miami-Dade County Circuit Court. It cites Rivera's claim to have done work for the U.S. Agency for International Development.

Officials and candidates for state office must disclose income greater than $1,000. Rivera has listed USAID as one of three income sources other than his $30,000 a year state salary in disclosure forms from 2003 to 2009. The agency says it has no record of him.

Rivera called the complaint without merit. He said Garcia is focusing on personal attacks instead of issues.