The winner of the third Pleasant Hill City Council seat up for grabs in Tuesday's election may be decided by mail-in ballots.

With all the precincts reporting, Tim Flaherty has a narrow 45 vote lead over fellow planning commissioner Jim Bonato. Flaherty has 3,677 votes and Bonato has 3,632. The Contra Costa County elections division is still counting mail-in ballots. Incumbent David Durant and Ken Carlson, a Concord police officer who was backed by the Pleasant Hill Police Officers' Association, also won.

The race to replace longtime Pleasant Hill City Clerk Marty McInturf wasn't close. Kim Lehmkuhl, a campaign manager for a national civil rights and voting rights group, won 75 percent of the vote to defeat Michael Bepler, a real-estate agent and builder.

In Martinez, voters chose incumbent Mark Ross and Anamarie Avila Farias. Farias received 6,025 votes, narrowly eclipsing Ross, who won 5,941 votes. Farias, a former planning commissioner, had strong support from downtown property owners and Councilwoman Lara DeLaney and Mayor Rob Schroder. She replaces Janet Kennedy, who did not seek re-election to a third term.

Dylan Radke, a member of the city's Parks, Recreation, Marina and Cultural Commission came in third with 4,951 votes. Martinez Treasurer Carolyn Robinson won 66 percent of the vote, handily beating Charles Martin for a second time.

Lisa P. White covers Martinez and Pleasant Hill. Contact her at 925-943-8011. Follow her at Twitter.com/lisa_p_white.