Story highlights Donald Trump won Washington's Republican primary

Both parties are voting, but only the GOP results count

Washington (CNN) Donald Trump is less than 10 delegates shy of clinching the Republican presidential nomination following a win Tuesday in the Washington state primary.

The victory -- winning at least 40 of Washington's delegates -- means Trump now has 1,229 of the 1,237 delegates he needs to clinch the GOP nomination, according to CNN estimates. Four more Washington delegates are still to be decided, potentially bumping Trump's total even higher.

Washington didn't have enough delegates to put him over the line Tuesday. Its results do, however, leave him inches short of it with a slate of contests on June 7 in California, New Jersey, New Mexico, Montana and South Dakota sure to seal the deal.

Trump became the presumptive nominee earlier this month with a decisive win in Indiana that forced his remaining rivals out of the race and ended months of talk about the potential of a contested convention.

News of Trump's victory was overshadowed on Tuesday night by the clashes between anti-Trump protesters and police outside his event in Albuquerque, New Mexico.

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