The 42-year-old was born in Detroit to Palestinian immigrant parents.
Tlaib will fill the seat formerly occupied by Michigan Democratic Rep. John Conyers, who left office past year amid accusations of sexual misconduct.
Minnesota's first Somali-American state representative has made history: She is now the country's first Somali-American elected to Congress.
The other was Rashida Tlaib, of MI. In an emotional speech following her historic election, Tlaib paid tribute her Palestinian roots.
"I'm Muslim and black", the hijab-wearing Omar said in a recent magazine interview.
Omar arrived in the United States, aged 14, after fleeing civil war in Somalia. She eventually settled in Minneapolis.
Before that, she had worked as a community organizer, a policy wonk for city leaders in Minneapolis, and as a leader in her local chapter of the NAACP - the African-American civil rights group.
Omar has forged a progressive political identity.
During her campaign, Omar focused on single-payer health care, gun control and immigration.
Omar, a Somali-American was once a refugee, while Tlaib is the first Pakistani-American woman in congress.
"I have proven myself to be someone who shows up, takes on the hard fight and delivers, and I am ready to do that for the people of the 5th Congressional District", stated Ilhan after winning in the primaries.
She cut her teeth working as a volunteer for John Kerry's presidential campaign in 2004 - making endless cold calls to rally Native Americans to vote.
Both women have served as state lawmakers.
If Jones wins the special election, which she is expected to because there are no Republicans running against her, she will only serve about 7 weeks in Congress.
Some analysts who have closely followed Washington politics say Tuesday night's election outcomes are unsurprising.
No Republicans were on the ballot in the heavily Democratic district, which represents parts of Detroit and some suburbs.