Sen. Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (D-N.J.) said Friday that Democrats would include a woman on their 2020 White House ticket, effectively pledging to pick a female vice presidential candidate if he wins the nomination.

Booker, speaking during a campaign stop in New Hampshire, said he was "very confident" Democrats would "make history" with the party's 2020 candidates.

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"No matter what, I’m looking you in the eye and saying this: There will be a woman on the ticket. I don’t know if it’s in the vice president’s position or in the president’s position," Booker said.

He added that "if I have my way, there will be a woman on the ticket."

Democrats already have a crowded 2020 field of White House hopefuls that includes a number of women, including Sens. Elizabeth Warren Elizabeth WarrenHarris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda Judd Gregg: The Kamala threat — the Californiaization of America GOP set to release controversial Biden report MORE (D-Mass.), Kamala Harris Kamala HarrisButtigieg stands in as Pence for Harris's debate practice First presidential debate to cover coronavirus, Supreme Court Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (D-Calif.), Amy Klobuchar Amy KlobucharSocial media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (D-Minn.) and Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.).

Booker previously pledged that he would prioritize picking a woman as his vice presidential candidate if he wins the party's presidential nomination.

Booker told MSNBC host Rachel Maddow last month that while he does not want to box himself in, he would be “looking to women first” for his potential running mate.

“You will rarely see a Democratic ticket anymore without gender diversity, race diversity,” Booker told Maddow, noting that he wished there was a female president right now, referring to 2016 Democratic presidential nominee Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE.