After rampant speculation, Senator Elizabeth Warren is now formally being vetted by Hillary Clinton’s team as a possible pick for vice president.

ABC News cited an unnamed source involved in the process to confirm the news on Monday, after Warren campaigned alongside Clinton earlier in the day.

Warren, who has publicly slammed Republican candidate Donald Trump for “racism” and “xenophobia,” endorsed Clinton for president in early June. Speculation about Warren’s potential role as vice president has intensified throughout Clinton’s campaign. The pair would make history as the first two women to lead the White House. Read more at ABC News.