Four Senate Democrats wrote Majority Leader Harry ReidHarry Mason ReidThe Supreme Court vacancy — yet another congressional food fight Trump seeks to turn around campaign with Supreme Court fight On The Trail: Battle over Ginsburg replacement threatens to break Senate MORE (D-Nev.), asking him to revive the public option in the Senate's healthcare bill.

Sen. Michael BennetMichael Farrand BennetOVERNIGHT ENERGY: House Democrats tee up vote on climate-focused energy bill next week | EPA reappoints controversial leader to air quality advisory committee | Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' Senate Democrats demand White House fire controversial head of public lands agency Next crisis, keep people working and give them raises MORE (D-Colo.) called on Reid to reintroduce the public option into the healthcare debate through the budget reconciliation process, which would short-circuit filibuster rules and allow Democrats to pass a bill with a simple majority in the Senate.

"Although we strongly support the important reforms made by the Senate-passed health reform package, including a strong public option would improve both its substance and the public’s perception of it," Bennet wrote to Reid in a letter cosigned by Sens. Kirsten GillibrandKirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.), Jeff MerkleyJeffrey (Jeff) Alan MerkleyThe Hill's Morning Report - Sponsored by The Air Line Pilots Association - Trump, Biden renew push for Latino support Sunday shows - Trump team defends coronavirus response Oregon senator says Trump's blame on 'forest management' for wildfires is 'just a big and devastating lie' MORE (D-Ore.), and Sherrod BrownSherrod Campbell BrownMnuchin says he and Pelosi have agreed to restart coronavirus stimulus talks Harris faces pivotal moment with Supreme Court battle Remote work poses state tax challenges MORE (D-Ohio).

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"The Senate has an obligation to reform our unworkable health insurance market -- both to reduce costs and to give consumers more choices," the senators added. "A strong public option is the best way to deliver on both of these goals, and we urge its consideration under reconciliation rules."

Reid had opted to exclude the controversial public insurance option from the Senate's bill after it became clear that he wouldn't be able to muster the necessary 60 votes to pass a bill including the measure.

Since the Senate passed its bill in December, Democrats have lost their 60-vote majority and have been examining options to finish the legislation.

One option under consideration would be for the House to pass a series of fixes to the Senate's bill in order for the whole package to pass muster with House Democrats. That bill -- a so-called "sidecar" bill -- would then pass through the Senate using reconciliation.

Over 100 House Democrats have signed onto a drive similar to Bennet's, calling for that sidecar bill to include provisions reestablishing the public option.