SAN DIEGO - Qualcomm co-founder Irwin Jacobs endorsed Thursday City Councilman Carl DeMaio, a Republican, for mayor.

Jacobs, a known-supporter of both Gov. Jerry Brown and President Barrack Obama, is a local philanthropist and a Democrat.

"DeMaio has impressed me with his intelligence and his command of the issues facing our city and its neighborhoods," said Jacobs. "His thoughtful innovations will attract businesses, create jobs, and improve our cultural life. Carl will be a worthy successor to Mayor Jerry Sanders."

As part of the endorsement announcement, DeMaio made a pledge Thursday towards bipartisanship. He told reporters if elected, he plans to involve Democrats to his cabinet, departments and boards and commissions.

"I am honored to have the support of Irwin Jacobs, who is San Diego’s most prominent Democrat and engaging philanthropist," said De Maio."I pledge as Mayor to have a bipartisan administration, hiring and appointing the best and the brightest to serve San Diego, regardless of political affiliation or ideology. ”

The announcement follows another key endorsement from  Mayor Jerry Sanders Tuesday.

“I am humbled to have the support of two great San Diegans who come from different political parties but both share a love of San Diego as we all do,” said DeMaio.  “Dr. Jacobs is an inspiration to all, and we are lucky to have someone who gives so much back to his community. I welcome all Democrats, Independents, and Republicans to join and support my campaign for San Diego Mayor.”

DeMaio faces Rep. Bob Filner, a Democrat, in the Nov. 6 mayoral race.