Run, Hillary, run,  say Senate's Dem women
© Anne Wernikoff

All of the Senate's Democratic women have reportedly signed a letter throwing their support behind Hillary ClintonHillary Diane Rodham ClintonHarris readies a Phase 2 as she seeks to rejuvenate campaign Nevada Senate passes bill that would give Electoral College votes to winner of national popular vote 2020 Dems break political taboos by endorsing litmus tests MORE's expected bid for president in 2016, the latest indication the former secretary of State would clear the field if she ran.

According to Capital New York, Sen. Kay HaganKay Ruthven HaganNorth Carolina businessman will challenge Tillis in GOP primary Embattled senators fill coffers ahead of 2020 NC state senator meets with DSCC as Dems eye challenge to Tillis MORE (D-N.C.) told a gathering of Democratic women hosted by EMILY's List of the letter.

“All of the Senate Democratic women have written her a letter encouraging her to run,” Hagan said at the Monday event.

Hagan said she does, indeed, support a potential Clinton presidential bid, a shift from 2008 when she avoided backing either Clinton or then-Sen. Barack ObamaBarack Hussein ObamaBudowsky: 3 big dangers for Democrats HuffPost says president's golfing trips to Trump properties cost taxpayers over 0 million in travel and security expenses Support for same-sex marriage dips 4 points from 2018 high: Gallup MORE in the Democratic primary.

According to ABC News, the letter was organized by Sen. Barbara BoxerBarbara Levy BoxerOnly four Dem senators have endorsed 2020 candidates Hispanic civil rights icon endorses Harris for president California AG Becerra included in Bloomberg 50 list MORE (D-Calif.) as a "private show of support" for their former colleague.

The former secretary of State has not yet decided on a run, but Democrats expect her to enter the race and largely clear the field.

The reported letter is the latest indication that Clinton's candidacy would likely dissuade other contenders from running.

Sens. Kirsten GillibrandKirsten Elizabeth Gillibrand2020 Dems put spotlight on disabilities issues Overnight Health Care — Presented by PCMA — CBO officials testify on pros and cons of 'Medicare for All' | Booker vows to form White House office on abortion rights | Measles outbreak spreads with cases now in half the country Lee, Sanders introduce bill to tax Wall Street transactions MORE (D-N.Y.), Amy KlobucharAmy Jean KlobucharCNN's O'Rourke town hall finishes behind Fox News, MSNBC Anita Hill: Female 2020 Democrats 'not being taken seriously' Harris seeks Iowa edge with army of volunteers MORE (D-Minn.) and Elizabeth WarrenElizabeth Ann WarrenThe Hill's Morning Report - Trump says no legislation until Dems end probes Harris readies a Phase 2 as she seeks to rejuvenate campaign 2020 Dems put spotlight on disabilities issues MORE (D-Mass.) have all been mentioned as possible Democratic contenders, but if they've signed onto the letter, that signals they'd step aside for Clinton. 

At least one female senator, Claire McCaskillClaire Conner McCaskillLobbying world Big Dem names show little interest in Senate Gillibrand, Grassley reintroduce campus sexual assault bill MORE (D-Mo.), has already announced she'd support a Clinton presidential bid, backing the pro-Clinton super-PAC Ready for Hillary.

Hagan, Clinton and Boxer's offices did not respond to a request for comment.