A Democrat running for retiring Rep. Henry Waxman's (D-Calif.) seat says he's raised more than $500,000 in a month and a half.

Matt Miller, a former official in the Clinton White House and radio host, is one of several contenders for Waxman's heavily Democratic seat.

"After spending the last six weeks raising money to compete with the career politicians, I can say this: first, people across the 33rd Congressional District are tired of politics as usual and ready for real change to get our economy moving; and second, our system of financing campaigns is fundamentally broken and desperately needs reform," Miller said in a statement from his campaign. "I'm running for Congress to do whatever it takes to deliver the change we need."

Other Democrats running for the seat include former Los Angeles mayoral candidate Wendy Greuel and state Sen. Ted Lieu.