Sen. Bernie Sanders speaks to members of the media as his wife Jane O’Meara Sanders looks on after an Oval Office meeting with President Barack Obama. (Photo by Alex Wong/Getty Images)

Pledging to continue his White House bid, Bernie Sanders said he will “of course” be competing in D.C.’s primary on Tuesday—the last in the nation—and will use it as a platform to advocate for statehood.

“The major point that I will be making to the citizens of the District of Columbia is that I am strongly in favor of D.C. statehood,” Sanders said today at the White House after meeting with President Barack Obama.

He compared the similarly sized D.C. and Vermont populations (at 672,228 people, D.C. has about 50,000 more residents) in making his point.

“The state of Vermont, which I represent, has about the same number of residents that Washington, D.C. has, except we have two United States senators and one congressman with full rights while D.C. does not. That does not make any sense,” he said. The Vermont senator has been arguing in favor of statehood since at least the early 1990s, and it will likely feature heavily in a rally planned for tonight at RFK.

Mayor Muriel Bowser has announced plans to propose legislation that would put D.C. statehood on the November ballot, and released a draft statehood constitution last month.

And last month, presumptive Democratic nominee Hillary Clinton pledged to be a “vocal champion for D.C. statehood” in an opinion piece in the Washington Informer.

While stopping short of endorsing Clinton, and noting that he is looking forward to the full count of votes in California, Sanders pledged: “I am going to do everything in my power and I will work as hard as I can to make sure that Donald Trump does not become president of the United States.”

He also thanked President Barack Obama and Vice President Joe Biden for their impartiality and not putting “their thumbs on the scale” in the process—Obama officially endorsed Clinton a few hours later— and took a couple of other shots at Trump.

“It is unbelievable to me—and I say this in all sincerity—that the Republican Party would have a candidate for president who in the year 2016 makes bigotry and discrimination the cornerstone of his campaign.”