Portrait of the 113th Congress

There will be over 90 new members of Congress sworn into office on Thursday — a diverse group of men, women, straight, gay, married, single, well-known and unknown.

The freshman class of 2013 includes an animal vet (Republican Ted YohoTheodore (Ted) Scott YohoRichard Gere welcomes lawmakers' words of support for Tibet Records show Papadopoulos frequently acted as Trump campaign rep Freedom Caucus chairman courts Dems on tax reform MORE of Florida), a reindeer farmer (Republican 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 of Michigan), a scion of a legendary family (Democrat Joseph Kennedy of Massachusetts), a famous twin (Democrat Joaquin Castro of Texas, whose brother gave the keynote address at the Democratic National Convention), and several unfamiliar faces that will be popping up on C-SPAN in the weeks to come.

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Lawmakers will take the oath of office at noon, as constitutionally mandated.

In the Senate, after the official swearing-in, Vice President Biden will host ceremonial reenactments for individual senators in the Old Senate Chamber.

Joining the 12 newly elected members of the upper chamber — three Republicans, eight Democrats and one Independent — will be Republican Tim ScottTimothy (Tim) Eugene ScottMcConnell names Senate GOP tax conferees GOP senator: Trump shouldn't pardon Flynn Trump should fill CFPB vacancy with Export-Import chief MORE, the South Carolina House member who was appointed to fill the seat of Sen. Jim DeMint (R-S.C.), who resigned this month.

In the House, there will be a roll call vote at 11 a.m. for new members and the swearing-in at noon, followed by a ceremonial swearing-in in the Rayburn House Office building at 3 p.m., which is where new members will get their photo taken with Speaker John BoehnerJohn Andrew BoehnerJohn Feehery: A political forest fire Trump's pick for Federal Reserve chief is right choice at right time The two-party system is dying — let’s put it out of its misery MORE (R-Ohio).

The lower chamber will gain 82 new lawmakers on Thursday: 35 Republicans and 47 Democrats.

This year’s Republican freshman class is much smaller than the legendary class of 2010, which caused many headaches for BoehnerJohn Andrew BoehnerJohn Feehery: A political forest fire Trump's pick for Federal Reserve chief is right choice at right time The two-party system is dying — let’s put it out of its misery MORE.

Republican Luke Messer of Indiana, who was elected president of the incoming freshmen, said he found a way to rein in his colleagues.

“I got a lot of accolades from classmates because at our first meeting I established a rule where everyone could talk but no one could talk more than two minutes, so our first meeting took 18 minutes and everybody was very happy,” he said this past weekend on C-SPAN’s “Newsmakers.”

The lower chamber also is losing some of its best-known members after Thursday: Reps. Barney Frank (D-Mass.), Ron Paul (R-Texas) and Dennis Kucinich (D-Ohio) are leaving.

But there will be some familiar faces returning to Capitol Hill — nine incoming House members have served in the lower chamber before: Republican Matt SalmonMatt SalmonMcSally tells GOP colleagues she'll run for Arizona Senate GOP Senate hopeful Kelli Ward leads challengers in internal poll Paul says he still supports McConnell after endorsing anti-McConnell candidate MORE of Arizona, Democrat Ann KirkpatrickAnn KirkpatrickHouse Dems highlight promising new candidates Vulnerable House incumbents build up war chests Cook Political Report shifts 11 House races towards Democrats MORE of Arizona, Democrat Alan GraysonAlan GraysonEighth Franken accuser comes forward as Dems call for resignation Pennsylania Dems file ethics complaint against Rep. Barletta The Hill's 12:30 Report MORE of Florida, Democrat Bill FosterGeorge (Bill) William FosterOvernight Regulation: House passes bill to overturn joint-employer rule | Trump officials to allow work requirements for Medicaid | Lawmakers 'alarmed' by EPA's science board changes Lawmakers ‘alarmed’ by EPA’s science board changes From fire to floods, recent natural disasters highlight the need for uniform claims adjustor licensing MORE of Illinois, Democrat Rick Nolan of Minnesota, Democrat Carol Shea-Porter of New Hampshire, Democrat Dan Maffei of New York, Democrat Dina Titus of Nevada and Texas Republican Steve StockmanSteve StockmanEx-GOP staffer pleads guilty to fraud, money laundering on behalf of ex-lawmaker Cornyn to run for reelection in 2020 Former congressman indicted on conspiracy charges MORE.

Shea-Porter said knowing fellow lawmakers was one of the biggest advantages of her previous service.

"The advantages of two terms already served are experience, perspective and established relationships. I really can't see any disadvantages!" she told The Hill in a statement.

And some of the incoming freshmen have unfamiliar faces but familiar last names.

Joseph Kennedy of Massachusetts returns the Kennedy name to Congress after a four-year absence and replaces another famous name in the process: Barney Frank.

Democrat Donald Payne Jr. of New Jersey took the seat of his father: the late Rep. Donald Payne (D-N.J.).

And Democrat Dan Kildee of Michigan replaces his uncle, retiring Rep. Dale Kildee (D-Mich.).

Several former congressional aides are joining their former bosses as colleagues: Messer worked for three former members and for the House Oversight and Government Reform Committee; Republican Rodney Davis of Illinois worked for longtime Rep. John Shimkus (R-Ill.); and Republican Andy BarrGarland (Andy) Hale BarrLexington mayor launches bid for Congress Flake's exit gives GOP new hope in Arizona Overnight Defense: Senate panel to get classified Niger briefing | Corker, Trump feud heats up | House passes North Korea sanctions MORE of Kentucky worked for former Rep. Jim Talent (R-Mo.).

In the Senate, four women were added to the ranks, making a total of 20 in the upper chamber — four Republicans and 16 Democrats  — a new record.

Democrat Elizabeth WarrenElizabeth Ann WarrenOvernight Regulation: Net neutrality supporters predict tough court battle | Watchdog to investigate EPA chief's meeting with industry group | Ex-Volkswagen exec gets 7 years for emissions cheating Overnight Tech: Net neutrality supporters predict tough court fight | Warren backs bid to block AT&T, Time Warner merger | NC county refuses to pay ransom to hackers Avalanche of Democratic senators say Franken should resign MORE comes in as one of the most well-known names. Her Senate race, in which she defeated incumbent Sen. Scott Brown (R-Mass.), garnered national attention. Ironically, Warren could end up working with Brown anyway. Fellow Massachusetts Sen. John KerryJohn Forbes KerryLobbying world Kerry: Trump not pursuing 'smart' or 'clever' plan on North Korea Tillerson will not send high-ranking delegation to India with Ivanka Trump: report MORE (D-Mass.) is President Obama’s nominee for secretary of State and Brown is seen as a strong contender for his seat should Kerry be confirmed and Brown decide to run.

Democrat Tammy BaldwinTammy Suzanne BaldwinDemocrats turn on Al Franken The Hill's 12:30 Report Avalanche of Democratic senators say Franken should resign MORE of Wisconsin is the first openly gay person elected to the upper chamber, although she has downplayed the historic aspect of her election.

“I didn’t run to make history. I ran to make a difference,” she wrote on her Twitter account on election night.

Six of the newly elected senators are from the House, meaning a majority of the upper chamber will be made up of former members from the lower chamber: Fifty-two of them have previous House service, according to the Senate Historical Office.

Those include Arizona Republican Jeff FlakeJeffrey (Jeff) Lane FlakeGOP strategist donates to Alabama Democrat Sasse: RNC help for Roy Moore 'doesn't make any sense' Sasse calls RNC decision to resume support for Moore 'bad' and 'sad' MORE and Democrats Chris MurphyChristopher (Chris) Scott MurphyAvalanche of Democratic senators say Franken should resign Senate passes tax overhaul, securing major GOP victory Dem senator compares GOP tax bill to unicorns, Tupac conspiracy theories MORE of Connecticut, Mazie HironoMazie Keiko HironoDemocrats turn on Al Franken The Hill's 12:30 Report Avalanche of Democratic senators say Franken should resign MORE of Hawaii, Joe DonnellyJoseph (Joe) Simon DonnellyTrump rips Dems a day ahead of key White House meeting The Hill's 12:30 Report Avalanche of Democratic senators say Franken should resign MORE of Indiana, Martin HeinrichMartin Trevor HeinrichAvalanche of Democratic senators say Franken should resign Senators introduce bipartisan gun background check bill Dem senator: 'Super close' on bipartisan deal on guns MORE of New Mexico, and Baldwin.

Of the nearly 2,000 men and women who have served in the Senate since its inception in 1789, 31 percent — a total of 606 — first served in the House, according to an analysis from the University of Minnesota.

There are some advantages to having previous congressional experience.

“I know where the bathrooms are,” Flake joked to The Hill.

Flake was referring to a common problem for freshmen — the Capital complex is a maze of hallways, staircases and tunnels that rivals Hogwarts. Most incoming members spend their first few weeks simply trying to learn their way around.

Turning serious, Flake noted, “It helps to have some experience, but the Senate is a different body and there’s a lot to learn.”

But he got an early start, crossing through the Capitol’s Statuary Hall and ornate rotunda over the past few weeks to attend the Senate Republican Conference’s weekly lunches.

“It’s better food over there,” Flake said. “I know that.”