Colorado Democrats have their sights on Sen. Cory Gardner, one of the most vulnerable senators in 2020 and one of two Republicans running in a state won by Hillary Clinton. And some see the race as an opportunity to do something historic: send a woman to the U.S. Senate.

Women now make up a majority in the state House after the recent midterms. And wins by Democratic women helped the party recapture the state Senate. But higher office has proved more elusive. Colorado is one of just five states that has never elected a female governor or senator.

Former Colorado Democratic Party Chairwoman Pat Waak said there have been ongoing discussions among female activists about the importance of having a woman challenge Gardner.

Some, like former Lt. Gov. Gail Schoettler, have already made their choices known in the Senate race, while others are waiting for the field to shake out. But they’re united by their desire for a female nominee.

“One of the things that Gail and I and others are concerned about is a history … where a bunch of guys in the background decide who is going to be the candidate,” said Waak, who is remaining neutral in the primary . “We don’t want that to happen.”