Hillary Clinton just can’t shake Bernie Sanders — getting soundly defeated by him in Oregon Tuesday night after she eked out a razor-thin victory in Kentucky.

With 99 percent of the vote counted in the Bluegrass State, Clinton was ahead by less than one-half of 1 percentage point — leading Alison Lundergan Grimes, chair of the Kentucky State Board of Elections, to declare that the lead would hold up.

Hours later in Oregon, several media outlets projected Sanders the easy winner there as he stormed ahead, 53 percent to 47 percent, with 61 percent of the votes counted.

Although Clinton has a virtually insurmountable lead in total delegates, she was hoping to turn the tide of several recent losses to Sanders with a momentum-building big night.

It was Sanders, though, who spoke like the victor.

“Don’t tell Secretary Clinton. She might get nervous. I think we’re going to win here in California,” he said at a rally in Carson, Calif., predicting victory in the state’s June 7 ­primary.

He also demanded that the Democratic Party be more open.

“The Democratic Party is going to have to make a very, very profound and important decision. It can do the right thing and open its doors and welcome into the party people who are prepared to fight for real economic and social change,” he said.

Clinton, meanwhile, tweeted her thanks to ­“everyone who turned out” and gave her a victory in Kentucky.

She added, “We’re always stronger united.”

Clinton holds a commanding lead of nearly 300 pledged delegates over Sanders and a dominant advantage among party officials and elected leaders known as superdelegates.

The outcomes in Kentucky and Oregon are not expected to change that, as Sanders picked up an estimated 53 delegates Tuesday while Clinton picked up 49.

Meanwhile, presumptive nominee Donald Trump won the GOP’s Oregon primary, the only one of the night for the Republicans.

He took 70 percent of the vote.

With wires