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

Sen. Susan CollinsSusan CollinsSenators crafting bill to limit deportations under Trump Cornyn: ‘Virtual certainty’ Sessions and Price will be confirmed Trump's wrong to pick Bannon or Sessions for anything MORE (R-Maine) has cast more than 5,500 consecutive votes since she was sworn into office in 1997. Reps. Justin AmashJustin AmashGOP rep: Trump has 'extra-constitutional' view of presidency Flag burning is just another PR stunt for the media to cover Trump tweets about flag burning, setting off a battle MORE (R-Mich.) and Steve WomackSteve WomackTrump tweets about flag burning, setting off a battle Students across the country spend their 'summer recess' getting involved in politics After the balloons have fallen MORE (R-Ark.), who were elected in 2010, have also not missed a vote. The others are Sen. Deb FischerDeb FischerTrump’s Cabinet picks raise hopes for infrastructure package GOP senators avoid Trump questions on rigged election No. 3 GOP senator: I'll still vote for Trump MORE (R-Neb.) and Reps. Derek KilmerDerek KilmerJunior Dems plot strategy as leadership vote looms Overnight Cybersecurity: Fallout from Yahoo's massive breach | House panel holds Clinton IT aide in contempt | Privacy groups want WhatsApp probe Small-business cybersecurity bill clears House MORE (D-Wash.) and David Jolly (R-Fla.).

This Congress, 12 other members have logged perfect attendance records, including Sen. Charles SchumerCharles SchumerOvernight Finance: Trump takes victory lap at Carrier plant | House passes 'too big to fail' revamp | Trump econ team takes shape Anti-Defamation League: Ellison's past remarks about Israel 'disqualifying' Dems press Trump to keep Obama overtime rule MORE (D-N.Y.) and House Majority Whip Kevin McCarthy (R-Calif.).

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

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 DonnellyJoe DonnellyTrump’s vow on Medicare in doubt after HHS choice Red-state Dems face tough votes on Trump picks Red-state Democrat: I'll oppose Trump's health chief MORE (D-Ind.)

Deb Fischer (R-Neb.)

Chuck GrassleyChuck GrassleyDrug pricing debate going into hibernation GOP leaders host Trump's top deputies Key Republican wants details on Ohio State attacker MORE (R-Iowa)

Kay HaganKay HaganGOP senator floats retiring over gridlock 2016’s battle for the Senate: A shifting map The untold stories of the 2016 battle for the Senate MORE (D-N.C.)

Charles Schumer (D-N.Y.)

Ron WydenRon WydenSenate passes college anti-Semitism bill Overnight Finance: Trump takes victory lap at Carrier plant | House passes 'too big to fail' revamp | Trump econ team takes shape Senate Dems: Force Cabinet nominees to release tax returns MORE (D-Ore.)

House

Justin Amash (R-Mich.)

John BarrowJohn BarrowDem files Ethics complaint on Benghazi panel Barrow thanks staff in farewell speech The best and the worst of the midterms 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.)

Billy Long (R-Mo.)

Kevin McCarthy (R-Calif.)

David McKinleyDavid McKinley10 Senate seats that could flip in 2018 Ethics panel scolds GOP lawmaker over namesake firm Lawmakers press concerns over fuel efficiency rules MORE (R-W.Va.)

Steve Womack (R-Ark.)

 

Vivian Hughbanks contributed.