This just in
Donald Trump has reached the required 1,237 delegates to clinch the GOP nomination, according to a count by The Associated Press. Trump was pushed to victory by his win in the Washington state primary on Tuesday, and now has 1,238 delegates; other reports, such as one by CNN on Wednesday, have Trump just short of the required number. Unbound delegates exclusively told the AP they would support Trump, thereby tipping him to victory.
Trump became the presumptive nominee earlier this month after a major win in Indiana when his only remaining competitors chose to suspend their campaigns.