EDIT: Conditional precincts are by Congressional district. Also added note copied for Board of Elections website.
I just looked at the Virginia figures, and they are now showing there are 141 precincts left to report their figures. Maybe they are revising the earlier numbers?
"VA Board of Elections website"
It still shows Webb with a 7300 vote lead.
Virginia counts provisional ballots as a separate precinct. Each county/independent city has one or more "conditional" precincts. I think they correspond to congressional districts, so that a county split between senate districts would have more than one conditional precincts.
If you look at the county breakdown allmost every county has M of M +(1,2,3) precincts reporting. There are a few where the the conditional ballots have been counted. They appear to be very small numbers (Allen won the conditional votes in one city by a 2:1 margin).
If you recall the AG race last year in Virginia, votes were being changed for days and weeks after the election night.
From Virginia Board of Elections web site
Important Note about Percentage of Precincts Reporting:
The percentage of precincts reporting has changed due to the start of the canvas and the counting of provisional ballots. For reporting purposes, the day immediately following the election, each locality creates one conditional vote (CV) precinct, per congressional district, in which to report their provisional votes. Localities with no provisional votes will show total votes of zero in the CV precinct for each candidate/ballot issue