Doyle defeated Marin County Coroner Ken Holmes, who will lose his job as coroner.
Marin County Supervisor Susan Adams defeated former Assemblywoman and California Secretary of Education Kerry Mazzoni in the race for the District 1 seat. Adams got 52 percent of the vote, according to unofficial results.
When the Marin County Board of Supervisors voted in November to combine the offices of sheriff and coroner to save $400,000 a year, it meant Marin County would join forty-seven other counties with a joint Sheriff-Coroner's Office.
Holmes, 67, decided to challenge Doyle, 62, for Marin County Sheriff.
Doyle joined the sheriff's office 40 years ago and has been sheriff for 14 years.
"I had the privilege of serving in each rank and as Undersheriff. I always conduct myself professionally, ethically and with integrity in my public and private life," Doyle said in his candidate's statement.
Doyle's office has 207 sworn deputies, 114 other law enforcement professionals and a $50 million budget.
Doyle said the sheriff's office can easily accommodate the coroner's office and create a more efficient county government.
"Marin County needs an experienced leader as their Sheriff; someone who understands law enforcement, our unique community and the complexity of an organization the size of the Marin County Sheriff's Office," Doyle said on his re-election website.
The seven-member Marin County coroner's office has a $1.5 million annual budget.
Holmes said his advanced certificates from the Commission on Peace Officer Standards and Training, qualified him to be elected sheriff and he said Doyle has no experience or training to act as coroner.
He said he has assisted three counties who consolidated both offices.
"I have the background, the experience, the knowledge and the administrative skills to provide a seamless melding of two vastly different functions," Holmes said on his re-election website.
In the supervisorial contest, Adams cited her efforts to adopt the Baylands Corridor to protect San Rafael's wetlands and to bring stronger control and oversight of the San Rafael Rock Quarry.
"Under my tenure, roads have been upgraded for universal access and safe bike and pedestrian pathways. Community shuttles now run in north San Rafael," Adams said in her candidate's statement.
Mazzoni said she opposes the Marin Energy Authority because the timing is wrong and she prefers increasing energy efficiency in homes and businesses.
"Programs for in-home health care for vulnerable seniors and funding for low-income children are on the chopping block yet the county has spent $2 million to create a risky energy bureaucracy," Mazzoni said in her candidate's statement.
She included a median barrier on state Highway 37, funding for restoration of the Bolinas Lagoon and the purchase of Millerton Point to expand Tomales Bay State Park among her accomplishments.
In Ross, attorney P. Rupert Russell and community volunteer Carla Small won election to the Ross Town Council. They defeated Mark Fritz and Iris Winey.
Small got 358 votes, Russell 263, Winey 173 and Fritts 168 votes, according to unofficial results.
Councilmen Michael Collins Skall and William Ronald Cahill did not run for re-election.