Rep. Elizabeth Esty (D-Conn.) @repesty

Rep. Markwayne Mullin (R-Okla.) @repmullin

Rep. Mark Meadows (R-N.C.) @RepMarkMeadows

Rep. Tom Rice (R-S.C.) @RepTomRice

Rep. Thomas Massie (R-Ky.) @RepThomasMassie

Rep. Matt Cartwright (D-Pa.) @RepCartwright

Rep. Carol Shea-Porter (D-N.H.) @RepSheaPorter

Rep. Ann McLane Kuster (D-N.H.) @RepAnnieKuster

Rep. Luke Messer (R-Ind.) @RepLukeMesser

Rep. Ann Wagner (R-Mo.) @RepAnnWagner

Rep. George Holding (R-N.C.) @RepHolding

Rep. Rodney Davis (R-Ill.) @RodneyDavis

Rep. Kevin Cramer (R-N.D) @RepKevinCramer

Rep. Ron DeSantis (R-Fla.) @RepDeSantis

Rep. Richard Hudson (R-N.C.) @RepRichHudson

Rep. Kerry BentivolioKerry BentivolioIndiana Republican: Leaders duped me Reindeer farmer saves 'cromnibus' with yes vote High drama as .1T spending package advances by one vote MORE (R-Mich.) @RepKerryB

Rep. Joseph Kennedy (D-Mass.) @repjoekennedy

Rep. Eric Swalwell (D-Calif.) @RepSwalwell

Rep. Ami BeraAmerish (Ami) Babulal BeraAmerica’s leadership needed in global health Lawmakers eye private moon missions Republicans look for California House wins in 2018 midterms MORE (D-Calif.) @repbera

Rep. Jim BridenstineJim BridenstineTrump stacks administration with climate change skeptics Trump’s NASA pick deletes posts from social media: report Trump to tap House Republican as NASA chief: report MORE (R-Okla.) @RepJBridenstine

Rep. Susan BrooksSusan BrooksThe Online Safety Modernization Act is a much-needed response to a growing problem Ethics panel extends review of Rep. Collins over investments Senators introduce 'cyber hygiene' bill MORE (R-Ind.) @SusanWBrooks

Rep. Cheri BustosCheri BustosEconomy-focused Dems headlining Iowa fundraiser Dems to unveil ‘better deal’ messaging campaign Monday Lawmakers send well-wishes to Scalise on Twitter MORE (D-Ill.) @RepCheri

Rep. Joaquín Castro (D-Texas) @joaquincastrotx

Rep. Douglas Allen Collins (R-Ga.) @RepDougCollins

Rep. Chris Collins (R-N.Y.) @RepChrisCollins

Rep. Paul Cook (R-Calif.) @RepPaulCook

Rep. Tammy Duckworth (D-Ill.) @RepDuckworth

Rep. Tom CottonTom CottonOvernight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions Lawmakers grapple with warrantless wiretapping program Senate passes 0B defense bill MORE (R-Ark.) @RepTomCotton

Rep. Steve Daines (R-Mont.) @stevedaines

Rep. John Delaney (D-Md.) @RepJohnDelaney

Rep. Suzan DelBeneSuzan DelBeneOvernight Health Care: ObamaCare signup groups to get answers on funding this week | Dems demand Trump action on opioids | More Dems back ‘Medicare for All’ bill Week ahead: Senate panel looks to quickly strike deal on ObamaCare fix Overnight Health Care: Governors urge Congress to fund key ObamaCare payments | Warren backs Sanders’ single-payer bill | Advocates seek long-term funding for children’s health program MORE (D-Wash.) @RepDelBene

Rep. William Enyart (D-Ill.) @repbillenyart

Rep. Bill FosterBill FosterHouse GOP’s new challengers: Scientists mulling campaigns Dems crowd primaries to challenge GOP reps Lawmakers talk climate for Earth Day, Science March MORE (D-Ill.) @RepBillFoster

Rep. Lois FrankelLois FrankelFormer CIA director: Don’t call Russian election hacking ‘act of war’ Palm Beach official proposes Mar-a-Lago tax to pay for Trump visits Members jam with Wynonna Judd, Keith Urban at Grammys on the Hill MORE (D-Fla.) @RepLoisFrankel

Rep. Tulsi GabbardTulsi GabbardThe OFF Act will mandate a swift and just transition to clean energy House panel approves 6.5B defense policy bill Jane Sanders starts group to boost ‘progressive voices’ MORE (D-Hawaii) @tulsipress

Rep. Pete GallegoPete P. GallegoObamaCare repeal vote: 15 GOP lawmakers to watch Vulnerable Texas GOP lawmaker survives rematch 5 races for tech to watch MORE (D-Texas) @RepPeteGallego

Rep. Denny HeckDenny HeckExclusive: Guccifer 2.0 hacked memos expand on Pennsylvania House races Heck enjoys second political wind Incoming lawmaker feeling a bit overwhelmed MORE (D-Wash.) @RepDennyHeck

Rep. Steven Horsford (D-Nev.) @RepHorsford

Rep. Hakeem Jeffries (D-N.Y.) @HakeemJeffries

Rep. David Joyce (R-Ohio) @RepDaveJoyce

Rep. Dan Kildee (D-Mich.) @RepDanKildee

Rep. Derek KilmerDerek KilmerInterior chief: New offshore drilling funds should pay for parks Our national parks need updates; Congress can help House Dems: Administration ignoring hundreds of oversight requests MORE (D-Wash.) @RepDerekKilmer

Rep. Ann KirkpatrickAnn KirkpatrickMajor progressive group endorses Martha McSally challenger Women make little gains in new Congress McCain wins sixth Senate term MORE (D-Ariz.) @RepKirkpatrick

Rep. Alan Lowenthal (D-Calif.) @RepLowenthal

Rep. Michelle Lujan Grisham (D-N.M.) @replujangrisham

Rep. Dan Maffei (D-N.Y.) @RepDanMaffei   

Rep. Sean Patrick Maloney (D-N.Y.) @RepSeanMaloney

Rep. Grace Meng (D-N.Y.) @RepGraceMeng

Rep. Gloria Negrete McLeod (D-Calif.) @RepMcLeod

Rep. Luke Messer (R-Ind.) @RepLukeMesser

Rep. Rick Nolan (D-Minn.) @usrepricknolan

Rep. Scott Perry (R-Pa.) @RepScottPerry

Rep. Robert Pittenger (R-N.C.) @RepPittenger

Rep. Raul Ruiz (D-Calif.) @CongressmanRuiz

Rep. Matt SalmonMatt SalmonSchumer tells Sinema he's backing her in Ariz. Senate race Comey fallout weighs on the GOP Conservative activists want action from Trump MORE (R-Ariz.) @RepMattSalmon

Rep. Brad Schneider (D-Ill.) @RepSchneider

Rep. Chris StewartChris StewartGOP rep would ‘recommend’ not paying much attention to Trump tweets California Democrat seeks to win fight on war powers Surprise war vote points to shift in GOP MORE (R-Utah) @repchrisstewart

Rep. Mark Takano (D-Calif.) @RepMarkTakano

Rep. Marc Veasey (D-Texas) @RepVeasey

Rep. Jackie Walorski (R-Ind.) @RepWalorski

Rep. Randy WeberRandy WeberGOP worries as state Dems outperform in special elections How Republicans split on the Harvey aid, fiscal deal House passes Trump deal on majority Democratic vote MORE (R-Texas) @TXRandy14

Rep. Ted YohoTed YohoDem lawmaker renews push for infrastructure, tax package Savings through success in foreign assistance GOP rep: I would have met with Russians for opposition research MORE (R-Fla.) @RepTedYoho

Rep. Kyrsten Sinema (D-Ariz.) @RepSinema

Rep. Jared Huffman (D-Calif.) @RepHuffman

Rep. Andy BarrGarland (Andy) Hale BarrHouse considers harsher rules for banks with North Korean ties Lobbying World Dem who called for 'new generation' of leaders endorses three House candidates MORE (R-Ky.) @RepAndyBarr

Rep. Steve StockmanSteve StockmanFormer congressman indicted on conspiracy charges Ex-GOP rep blames arrest on 'deep state' conspiracy Former Texas rep Steve Stockman facing conspiracy charge MORE (R-Texas) @SteveStockmanTX

Rep. Janice Hahn (D-Calif.) @Rep_JaniceHahn

All 100 senators, including new members of the upper chamber, are also on Twitter, although not all officially.