“This amendment would save lives by helping to deprive mass murderers of a key means of massacre," Blumenthal said before his amendment failed. "Mass shooters know that high-capacity magazines allow them to take more lives, more rapidly.”

Sens. Mark BegichMark Peter BegichPerez creates advisory team for DNC transition The future of the Arctic 2016’s battle for the Senate: A shifting map MORE (Alaska), Joe Donnelley (Ind.), Kay HaganKay HaganLinking repatriation to job creation Former Sen. Kay Hagan in ICU after being rushed to hospital GOP senator floats retiring over gridlock MORE (N.C.), Heidi HeitkampMary (Heidi) Kathryn HeitkampJustice Dept investigating Equifax stock sales: report Dem senator: Trump 'very serious' about infrastructure Trump steps up courtship of Dems MORE (N.D.), Jon TesterJonathan (Jon) TesterFive things to know about Sanders’s single-payer plan Where Dems stand on Sanders's single-payer bill Overnight Regulation: DeVos ignites backlash with rewrite of campus sexual assault policy l EPA power plant rule decision likely this fall | Panel approves Trump financial regulator nominees MORE (Mont.), Mary LandrieuMary LandrieuCNN producer on new O'Keefe video: Voters are 'stupid,' Trump is 'crazy' CNN's Van Jones: O'Keefe Russia 'nothingburger' video 'a hoax' Trump posts O'Keefe videos on Instagram MORE (La.), Joe ManchinJoseph (Joe) ManchinGOP sees fresh opening with Dems’ single payer embrace Trump steps up courtship of Dems The Hill's 12:30 Report MORE (W.Va.), Mark PryorMark PryorMedicaid rollback looms for GOP senators in 2020 Cotton pitches anti-Democrat message to SC delegation Ex-Sen. Kay Hagan joins lobby firm MORE (Ark.), Jon Tester (Mont.) and Mark WarnerMark Robert WarnerOvernight Cybersecurity: Equifax hit by earlier hack | What to know about Kaspersky controversy | Officials review EU-US privacy pact Overnight Tech: Equifax hit by earlier undisclosed hack | Facebook takes heat over Russian ads | Alt-right Twitter rival may lose domain Facebook under fire over Russian ads in election MORE (Va.) and Max BaucusMax Sieben BaucusBernie Sanders flexes power on single-payer ObamaCare architect supports single-payer system Trump has yet to travel west as president MORE (Mont.) were the red-state Democrats who voted against the amendment. GOP Sen. Mark KirkMark KirkStale, misguided, divisive: minimum wage can't win elections Immigration critics find their champion in Trump Trump's nominee to lead USAID has the right philosophy on international aid MORE (Ill.) supported the high capacity clip ban.

The high capacity clip ban did slightly better than the assault weapons ban proposed by Sen. Dianne Feintein (D-Calif.). Her amendment failed on a 40-60 vote.

The Senate is considering S.649, the Safe Communities, Safe Schools Act, which would expand background checks on gun purchases, crack down on gun trafficking and beef up security in schools. Some GOP senators have said the bill goes too far and infringes on the rights of gun-owners.

Ahead of the vote, Sen. Lindsey GrahamLindsey Olin GrahamTop Louisiana health official rips Cassidy over ObamaCare repeal bill Senate Dems hold floor talk-a-thon against latest ObamaCare repeal bill Overnight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions MORE (R-S.C.) said he thought the magazine limit would fail.

“One bullet in the hands of a crazy person is too many, which is why I will oppose a magazine limit,” Graham said. “At the end of the day the magazine limitation is going to fail because it does not address the problem.”

Democrats have been pushing for stricter gun laws since December, when a gunman killed 20 first-graders and six school employees at Sandy Hook Elementary School in Newtown, Conn.

Blumenthal pointed out that the shooting at Sandy Hook was able to fire more than 150 bullets in five minutes and five children were able to escape the school while the shooter was reloading.

“Children escaped the slaughter when Adam Lanza changed magazines,” Blumenthal said. “More magazine changes might have helped save more lives.”

Blumenthal said he knew his amendment would be a tough vote for some of his colleagues but he said they should imagine how hard it was for the family members of victims at Newtown to come to the U.S. Capitol and urge lawmakers to pass “commonsense” gun control reforms.

“We owe it to the families to heed their message,” Blumenthal said. “We need to do something about the guns.

“Regardless of the result today, his cause is not going away. … The Newtown families are not going away … and we are not going away … [but] unfortunately gun violence is not going away.”