AP: More than 700 previously uncounted ballots were added in [Democratic-leaning] King County after election workers, under the close watch of party observers, "enhanced" ballots to reflect voters' intentions. Those could include, for example, ballots on which a voter circled the candidate's name, rather than filling in the oval for an optical scanning machine to read.
AP: "We don't believe King County," [GOP Chairman] Vance said. "Our observers have watched. Ballots are being altered. And we don't believe they are being set aside."
See also John Fund's WSJ Editorial.