Dublin Mayor David Haubert sat in first place with 26.97% of the vote, according to unofficial results reported as of early Wednesday morning -- which represent the bulk, but not all, of the eligible ballots cast. District 1 covers Dublin and Livermore in the Tri-Valley, as well as Fremont and part of Sunol.
Fremont City Councilman Vinnie Bacon was in second place at 26.10% (233 votes behind Haubert), in position to advance to the runoff election in November if the order holds after remaining ballots are counted in the coming days.
Not far behind was Dublin City Councilwoman Melissa Hernandez, with 24.67%, trailing Bacon by 381 votes for second place.
Rounding out the list was State Sen. Bob Wieckowski, a Fremont resident who is terming out at the state level this year, with 22.26% of the vote.
The four candidates were vying to succeed Supervisor Scott Haggerty, who is retiring after six terms on the county board. Haggerty had given a dual endorsement ahead of the primary, supporting Hernandez and Wieckowski.
The unofficial election results include early vote-by-mail tallies and totals reported by the precincts on Election Night. The election figures will likely change in the coming days as final vote-by-mail ballots, provisional ballots and other qualifying ballots are processed, according to the California Secretary of State.
The Tri-Valley's other Board of Supervisors position, District 4 which includes Pleasanton, appears to be a done deal with incumbent Supervisor Nate Miley holding a nearly 2-to-1 lead after Election Night.
Miley garnered 67.20% of the vote in his bid for a sixth consecutive term, comfortably ahead of lone challenger Esther Goolsby, an environmental community organizer from Oakland, at 32.80%.
The clear majority over 50% would give Miley the victory outright in the primary election to retain his position representing District 4, which in addition to Pleasanton includes East Oakland, Montclair, Castro Valley, Ashland, Cherryland, Fairview and El Portal Ridge.
In the other Board of Supervisors race, which is outside of the Tri-Valley, District 5 Supervisor Keith Carson finished well ahead of lone challenger Albany City Councilman Nick Pilch -- 79.67% to 20.33%.
==B In other elections==
* Pleasanton resident Laurene Green is poised to unseat an incumbent to win a position on the Zone 7 Water Agency Board of Directors.
Green, a first-time candidate and a water resources engineer by trade, finished Election Night comfortably in second place (27.59%) with three seats up for grabs on Tuesday.
Leading the Zone 7 contest in first place with 28.92% was incumbent Director Sandy Figuers, a Livermore resident and groundwater geologist by trade who has been on the board since 2008 (plus 12 years of prior board service in the '80s and '90s).
In position for the third and final seat is incumbent Director Angela Ramirez Holmes, a two-term board member who lives in Pleasanton and works in political consulting, with 22.25% of the vote.
Four-term incumbent Dick Quigley from Pleasanton is on the outside looking in with a fourth-place finish, currently at 15.25%. The final candidate, Livermore resident Hugh Bussell, garnered just 5.98%.
* Alameda County will have a November runoff election for Superior Court Department 2, with no single candidate earning a 50% majority on Tuesday.
The top two candidates, percentage points apart, advancing to the runoff are civil rights attorney Mark Fickes (38.47%) and trial attorney Elena Condes (37.98%). In third place was administrative law judge Lilla Szelenyi (23.56%).
This is the bench position opening up with the retirement of longtime Judge Carol Brosnahan.
* Pleasanton's incumbent Democratic legislators in the State Senate, State Assembly and U.S. House of Representatives are also set to compete in November runoffs, each against a Republican challenger who finished well behind in the primary election.
Sen. Steve Glazer (D-Orinda) sat in first place with 48.2% in his bid for re-election to a second full four-year term representing District 7.
Republican Julie Mobley, who is listed on the ballot as a community volunteer, was in second place with 30.7% for a spot in the runoff. Democrat Marisol Rubio, a scientific research and health care provider from San Ramon, finished in third with 21.1%.
Incumbent District 16 Assemblywoman Rebecca Bauer-Kahan (D-Orinda) will head to the general election after earning 63.1% in the primary. Alamo businessman Joseph Rubay, a Republican, came away with 36.9% -- but he had already qualified for the runoff.
U.S. Rep. Eric Swalwell (D-Livermore) stood comfortably in first place against six challengers with 56.5%. He'll face Republican Alison Hayden, a special education teacher, in November after she garnered 20.1% in the primary for second place.
The other 15th Congressional District candidates, in order, were Peter Yuan Liu (9.1%), Samantha Campbell (8.7%), Tuan Phan (3.0%), Don J. Grundmann (1.4%) and Austin E. Intal (1.2%).
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