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 BeraCook Political Report moves 9 House races toward Dems Dems float revoking congressional medal for Myanmar leader Week ahead: Defense spending ties up budget talks MORE (D-Calif.) @repbera

Rep. Jim BridenstineJames (Jim) Frederick BridenstineHouse members urge Senate to confirm Trump's NASA nominee Overnight Energy: Dems go on attack at EPA chief's hearing | Pruitt backs national fuel standard | Bill Nye sparks controversy with State of the Union plans | Greens sue over wolf protections Bill Nye's company says SOTU attendance not an endorsement MORE (R-Okla.) @RepJBridenstine

Rep. Susan BrooksSusan Wiant BrooksGun protests sweep nation as House passes school safety bill House passes school safety bill amid gun protests Dems call for investigation into lawmakers who sleep at the Capitol MORE (R-Ind.) @SusanWBrooks

Rep. Cheri BustosCheryl (Cheri) Lea BustosRural Democrats deserve a better farm bill Lawmakers trade barbs, torch Trump at DC soiree Conservative Dems target rural voters with new task force 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 CottonThomas (Tom) Bryant CottonOvernight Health Care: House passes .3T omnibus | Bill boosts funds for NIH, opioid treatment | Senators spar over ObamaCare fix | 'Right to Try' bill heads to the Senate Overnight Regulation: Omnibus includes deal on tip-pooling rule | Groups sue over rules for organic livestock | AT&T, DOJ make opening arguments in merger trial GOP senators push tougher sentencing for synthetic opioid MORE (R-Ark.) @RepTomCotton

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

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

Rep. Suzan DelBeneSuzan Kay DelBeneHouse panel begins evaluation of expired tax breaks A new NAFTA for the digital age Dem seeks to curb tax breaks for employee buyouts over sexual misconduct MORE (D-Wash.) @RepDelBene

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

Rep. Bill FosterGeorge (Bill) William FosterProtecting American innovation Five races to watch in the Illinois primary Dem invites Sutherland Springs shooting 'hero' to State of the Union MORE (D-Ill.) @RepBillFoster

Rep. Lois FrankelLois Jane FrankelMelania Trump wears white pantsuit to State of the Union Democrats planning protests for Trump’s first State of the Union Dems to invite sexual assault survivors as guests to Trump's State of the Union: report MORE (D-Fla.) @RepLoisFrankel

Rep. Tulsi GabbardTulsi GabbardCongress, leave no H-1Bs behind Top general: Countering Iran in Syria not a US military mission Hawaii reps call for hearing on missile alerts after false alarm MORE (D-Hawaii) @tulsipress

Rep. Pete GallegoPete Pena GallegoTexas Democrats smell blood in the water for 2018 ObamaCare repeal vote: 15 GOP lawmakers to watch Vulnerable Texas GOP lawmaker survives rematch MORE (D-Texas) @RepPeteGallego

Rep. Denny HeckDennis (Denny) Lynn 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 Christian KilmerCongress to require FEC report on foreign money in elections With bills on the table, Congress must heed the call to fix our national parks McConnell, Schumer tap colleagues to explore budget reform MORE (D-Wash.) @RepDerekKilmer

Rep. Ann KirkpatrickAnn KirkpatrickGold Star father attacked by Trump steps up role in Dem primaries House Dems highlight promising new candidates Vulnerable House incumbents build up war chests 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 SalmonMatthew (Matt) James SalmonQuiet jockeying for McCain seat angers Republicans McSally tells GOP colleagues she'll run for Arizona Senate GOP Senate hopeful Kelli Ward leads challengers in internal poll MORE (R-Ariz.) @RepMattSalmon

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

Rep. Chris StewartChristopher (Chris) Douglas StewartGOP rep: Probably time for more regulation on Facebook GOP rep: We’re going to show the CIA ‘got it wrong’ on Russia trying to help Trump Utah GOP wrestles with party purity MORE (R-Utah) @repchrisstewart

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

Rep. Marc Veasey (D-Texas) @RepVeasey

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

Rep. Randy WeberRandall (Randy) Keith Weber25 House Republicans defy leadership in key spending bill vote Fierce battle erupts over releasing intelligence report Democrats dig for Russian connection and uncover environmentalists MORE (R-Texas) @TXRandy14

Rep. Ted YohoTheodore (Ted) Scott Yoho25 House Republicans defy leadership in key spending bill vote Once on chopping block, Trump's budget puts development finance in overdrive Overnight Cybersecurity: Zuckerberg breaks silence on Cambridge Analytica | Senators grill DHS chief on election security | Omnibus to include election cyber funds | Bill would create 'bug bounty' for State MORE (R-Fla.) @RepTedYoho

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

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

Rep. Andy BarrGarland (Andy) Hale BarrDemocrats must stop sabotaging candidates who can win in 2018 The Hill's 12:30 Report Pence to promote GOP candidates in Iowa, Kentucky and Nebraska MORE (R-Ky.) @RepAndyBarr

Rep. Steve StockmanStephen (Steve) Ernest StockmanTrump's right — to prevent gun violence, don't disarm our military What Stoneman Douglas activists can learn from Bill Clinton’s assault weapons ban SpaceX launch is step one in a new American-dominated space race 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.