Senate Armed Services Committee Chairman Carl LevinCarl Milton LevinListen, learn and lead: Congressional newcomers should leave the extremist tactics at home House Democrats poised to set a dangerous precedent with president’s tax returns The Hill's 12:30 Report — Sponsored by Delta Air Lines — White House to 'temporarily reinstate' Acosta's press pass after judge issues order | Graham to take over Judiciary panel | Hand recount for Florida Senate race MORE said Tuesday's failed cloture vote on a military policy bill has strengthened Democratic hopes to change the chamber's filibuster rules next year.

Levin said the 56-43 vote on a Defense Department authorization bill should have passed even though Republicans blocked it.

"I don't think a filibuster before has ever prevented the Senate from getting to a defense authorization," Levin said. "These filibusters on motions to proceed cannot be allowed to prevent us from getting our work done."

Democratic Conference Vice Chairman Charles SchumerCharles (Chuck) Ellis SchumerJewish Democratic congresswoman and veteran blasts Trump's 'disloyalty' comments Schumer says Trump encouraging anti-Semites Saagar Enjeti: Biden's latest blunder; Krystal Ball: Did Schumer blow our chance to beat McConnell? MORE (N.Y.) held a Rules Committee hearing Wednesday on ideas to change the Senate's filibuster rules. The hearing - the committee's fifth on the topic - featured Sen. Tom HarkinThomas (Tom) Richard HarkinWisconsin lawmaker gets buzz-cut after vowing not to cut hair until sign language bill passed Democratic debates kick off Iowa summer sprint Key endorsements: A who's who in early states MORE (D-Iowa), who has been pushing for filibuster reform since 1995.

Levin said Tuesday's vote was "a very powerful argument for why we should change the rules."

"I believe in protecting the rights of the minority party, but the problem is that the Republicans have nee using the rules to prevent any debate... That's something I hope we can change one way or another."