Sen. Kamala Harris, D-Calif., and Michigan Gov. Gretchen Whitmer, seen campaigning with former Vice President Joe Biden in March, are two of the women often talked about as possible running mates on the Democratic ticket.

Sen. Kamala Harris, D-Calif., and Michigan Gov. Gretchen Whitmer, seen campaigning with former Vice President Joe Biden in March, are two of the women often talked about as possible running mates on the Democratic ticket.