Hillary Clinton has opened up a 12-point lead nationally over Donald Trump in a new Bloomberg Politics poll.

Clinton gets 49 percent to Trump’s 37 percent among likely voters, with 55 percent saying they could never vote for the mogul.

She also extended her lead in an NBC News/SurveyMonkey poll.

Clinton has the support of 49 percent in that poll, compared with Trump’s 42. The same poll had her up 48 to 44 percent last week.

The poll boosts came as the presumptive Democratic nominee won Tuesday’s Washington, DC, primary, the last of the season.

Clinton romped over Vermont Sen. Bernie Sanders, 79 percent to 21 percent.

The two Democrats later met face to face at a DC hotel for nearly two hours. Neither would say what they discussed.