White House adviser Valerie Jarrett on Thursday told supporters that President Barack Obama was “so absolutely delighted” by Tuesday's gay marriage wins.

Voters in Maryland, Washington state and Maine legalized the institution, while Minnesotans rejected a constitutional amendment banning it.

(Related: Washington joins Maine, Maryland in approving gay marriage.)

Jarrett discussed the ballot initiatives in a conference call sponsored by the Human Rights Campaign (HRC), the nation's largest gay rights advocate.

The president believes voters in those 4 states “all came down on the right side of history,” Jarrett said.

Voters in Wisconsin elected Tammy Baldwin as their U.S. Senator. She becomes the nation's first openly gay senator.

“We couldn't be more thrilled that Wisconsin is sending Tammy Baldwin to the Senate,” Jarrett is quoted as saying by BuzzFeed.

(Related: More than 100 openly gay candidates win elections.)