Republican Dan Roberts emerged Tuesday as the second-place winner in the North Coast congressional race, edging Democrat Norman Solomon by 173 votes and earning a place in the November runoff.
The outcome had remained uncertain three weeks after the June 5 primary, largely due to a slow vote tally in Sonoma County.
The gap between Roberts and Solomon, 760 votes at the end of last week with more than 25,000 local votes uncounted, narrowed - but not enough for Solomon to take the lead.
The other five counties in the 2nd Congressional District completed their vote counts last week.
Sonoma County elections officials said Tuesday that fewer than 300 votes were uncounted and the results — although still unofficial — were unlikely to change.