Six members of Congress have never missed a vote in their careers on Capitol Hill.

Sen. Susan CollinsSusan Margaret Collins2020 Republicans accuse Schumer of snubbing legislation Key Republicans say Biden can break Washington gridlock Feehery: Pivoting to infrastructure could help heal post-impeachment wounds MORE (R-Maine) has cast more than 5,500 consecutive votes since she was sworn into office in 1997. Reps. Justin AmashJustin AmashTrump allies assail impeachment on process while House Democrats promise open hearings soon Hoyer: We are going to move as fast 'as the facts and truth dictate' on open hearings Conway spars with Wallace on whether White House will cooperate with impeachment inquiry after formal vote MORE (R-Mich.) and Steve WomackStephen (Steve) Allen WomackTom Cotton's only Democratic rival quits race in Arkansas Lawmakers dismiss fresh fears of another government shutdown Lawmakers pay tribute to late Justice Stevens MORE (R-Ark.), who were elected in 2010, have also not missed a vote. The others are Sen. Deb FischerDebra (Deb) Strobel FischerEleven GOP senators sign open letter backing Sessions's comeback bid Female lawmakers make bipartisan push for more women in politics at All In Together gala Former Nebraska Sen. Bob Kerrey endorses Biden MORE (R-Neb.) and Reps. Derek KilmerDerek Christian KilmerHouse extends Select Committee on the Modernization of Congress for another year Progressive freshmen jump into leadership PAC fundraising Hillicon Valley: Zuckerberg to testify on Libra | Extremists find home on Telegram app | Warren blasts Facebook for not removing anti-Biden ad | California outlaws facial recognition in police body cameras | China rips US tech sanctions MORE (D-Wash.) and David Jolly (R-Fla.).

This Congress, 12 other members have logged perfect attendance records, including Sen. Charles SchumerCharles (Chuck) Ellis Schumer2020 Republicans accuse Schumer of snubbing legislation Schumer: Leadership trying to work out competing surprise medical bill measures Top GOP senator: Drug pricing action unlikely before end of year MORE (D-N.Y.) and House Majority Whip Kevin McCarthy (R-Calif.).

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Rep. Leonard Lance (R-N.J.), who is among the dozen, noted that his state is relatively close to Washington, D.C. But he takes pride in making every roll call, saying when an appointment or meeting conflicts with a vote, “I excuse myself form the office to make sure I am on the floor at the appropriate time.”

For this article, The Hill reviewed roll call data on Congress.gov as well as govtrack.us.

Current members who have never missed a vote

Senate

Susan Collins (R-Maine) (started serving in 1997)

Deb Fischer (R-Neb.) (started serving in 2013)

House

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Justin Amash (R-Mich.) (started serving in 2011)

Derek Kilmer (D-Wash.) (started serving in 2013)

Steve Womack (R-Ark.) (started serving in 2011)

David Jolly (R-Fla.) (started serving in 2014)

Current members who have not missed votes in this Congress

Senate

Susan Collins (R-Maine)

Joe DonnellyJoseph (Joe) Simon DonnellyWatchdog accuses pro-Kavanaugh group of sending illegal robotexts in 2018 Lobbying world Trump nominees meet fiercest opposition from Warren, Sanders, Gillibrand MORE (D-Ind.)

Deb Fischer (R-Neb.)

Chuck GrassleyCharles (Chuck) Ernest GrassleyOvernight Health Care: GOP senator says drug price action unlikely this year | House panel weighs ban on flavored e-cigs | New York sues Juul Top GOP senator: Drug pricing action unlikely before end of year Key Republicans say Biden can break Washington gridlock MORE (R-Iowa)

Kay HaganKay Ruthven HaganDemocrats will win back the Senate majority in 2020, all thanks to President Trump The Hill's Morning Report - Presented by Better Medicare Alliance - Dems shift strategy on impeachment vote Former North Carolina Sen. Kay Hagan dies at 66 MORE (D-N.C.)

Charles Schumer (D-N.Y.)

Ron WydenRonald (Ron) Lee WydenOvernight Health Care: GOP senator says drug price action unlikely this year | House panel weighs ban on flavored e-cigs | New York sues Juul Top GOP senator: Drug pricing action unlikely before end of year Senate aides met with tax return whistleblower: report MORE (D-Ore.)

House

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Justin Amash (R-Mich.)

John BarrowJohn Jenkins BarrowRepublican wins Georgia secretary of state runoff to replace Kemp The most important runoff election is one you probably never heard of Our democracy can’t afford to cut legal aid services from the budget MORE (D-Ga.)

Henry Cuellar (D-Texas)

Charles Dent (R-Pa.)

David Jolly (R-Fla.) (started serving in 2014)

Derek Kilmer (D-Wash.)

Leonard Lance (R-N.J.)

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Billy Long (R-Mo.)

Kevin McCarthy (R-Calif.)

David McKinleyDavid Bennett McKinleyBipartisan former EPA chiefs say Trump administration has abandoned agency's mission Thirty-four GOP members buck Trump on disaster bill Divisions emerge over House drug price bills MORE (R-W.Va.)

Steve Womack (R-Ark.)

 

Vivian Hughbanks contributed.