OLYMPIA, Wash. (AP) — Washington state's race for governor remains too close to call, with hundreds of thousands of ballots left to count.

Early results Tuesday night showed Democrat Jay Inslee with a slight lead over Republican Rob McKenna. The two candidates have been competing in one of the most watched and most expensive gubernatorial races in the country, with the campaigns and outside political groups raising and spending some $40 million in the race.

As of Tuesday night, many ballots remained uncounted while others have yet to arrive at election offices around the state.

Washington has a recent history of competitive gubernatorial races. Most notably, current Gov. Chris Gregoire won the 2004 race by a mere 133 votes after two recounts and a court challenge.

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