Could New Jersey Senator Cory Booker end up in the White House by the end of the year? According to a recent CNN interview, he just might.

While being questioned by CNN’s Brianna Keilar on State of the Union, Booker avoided all questions having to do with the possibility of being Hillary Clinton‘s running mate. Instead, he referred all questions pertaining to the Democratic vice presidency to the Clinton campaign.

This is a first for Booker who just last month [June 2016] told MSNBC’s Andrea Mitchell that he was not being “vetted” by Clinton. One question that has popped up in response to Booker’s actions is what has changed since Booker’s previous interview that has made him alter the way he addresses the popular inquiry?

“I’m just referring questions about the vice presidency to the woman who is going to have to make this decision,” Booker stated in explanation to his change of response.

According to CNN, if Booker doesn’t end up fulfilling Clinton’s running mate position, “Sen. Tim Kaine of Virginia, Sen. Elizabeth Warren of Massachusetts, Housing and Urban Development Secretary Julian Castro, Labor Secretary Tom Perez, Sen. Sherrod Brown of Ohio and Rep. Xavier Beccera of California” are the next best bets.