Below are some of the record-making moments from the 2018 midterm elections.
And it appears to have come true.
In the House, 237 women were on the ballot as major-party candidates.
A record number of women have already been elected to the House, with some districts still to be counted. Polis, who declared victory late Tuesday night, has always been outspoken in favour of marijuana legalisation.
The new intake heading to Washington includes a number of historic firsts.
The last time New York Rep. Joe Crowley faced a primary challenge, Alexandria Ocasio-Cortez was a teenager.
"There is nothing inherently noble about protecting a status quo that does not serve the needs of working-class Americans", said Ocasio-Cortez, one of a handful of Congressional candidates this year who identified as democratic socialists.
"Together, we made history!".
Abby Finkenauer, congresswoman-elect for Iowa's 1st district.Cindy Axne, congresswoman-elect for Iowa's 3rd district.
Virginia's 7th, a district split between rural areas and the suburbs of Richmond, shifted by 17 percentage points in favor of Democrats between 2016 to 2018, delivering a win to the Democratic candidate, Abigail Spanberger.
First woman senator from Tennessee: Republican Marsha Blackburn defeated Democrat Phil Bredeson and will be the first woman to serve as a Senator from the Volunteer State.
Davids also became the first LGBT Native American elected into Congress when she ousted Republican incumbent Kevin Yoder on Tuesday.
The "women's wave" included MA, where Democrat Ayanna Pressley was elected by Seventh District voters to be the first African-American woman to represent the state as a House member.
Former Mayor of Southfield, Michigan, Brenda Lawrence won her bid to represent Michigan's 14th congressional district, according to figures published by the AP. It will also feature the first Native American women, the first Muslim women and the youngest woman ever elected to Congress.
"It is up to us to fulfil the promise of America", she told supporters after her win.
"Until every child has a fair shot at a higher education, we're not done", she added. Those Indivisible groups supported a new wave of female candidates. "It's not just good enough to see the Democrats back in power but it matters who those Democrats are".
The New York Times estimates that 114 million votes were cast compared to 83 million four years ago. Research shows that women are more likely to raise policies related to women's health and family than men.