Sanders wins Oregon, battles Clinton in Ky.; Trump wins Ore.

WASHINGTON (AP) — Bernie Sanders has won Oregon's presidential primary and battled Hillary Clinton to a razor-thin margin in Kentucky, vowing to stay in the race until the end as Clinton aimed to blunt his momentum and prepare for a fall campaign against Republican Donald Trump.

In a sign of his pivot into the general election, his campaign announced that it had signed a joint fundraising agreement with the Republican National Committee that will allow it to raise cash for both his campaign and other Republican efforts.

Clinton ended the night with a commanding lead of 279 pledged delegates over Sanders and a dominant advantage among party officials and elected leaders known as superdelegates.

[...] Tuesday's elections followed a divisive weekend state party convention in Nevada in which supporters of Sanders were accused of tossing chairs and making death threats against the Nevada party chairwoman at the event in Las Vegas.

In a sign of the tensions between the two sides, Sanders issued a defiant statement Tuesday dismissing complaints from Nevada Democrats as "nonsense" and said his supporters were not being treated with "fairness and respect."