She ran unopposed in Michigan's 13th Congressional District, easily surviving a write-in campaign from primary opponent Brenda Jones.
Omar also had the backing of Ocasio-Cortez in her primary race, and she will come to Congress having been an open critic of the Israeli government's treatment of Palestinians.
Born in Mogadishu, and raised in Baydhabo, Somalia, Omar gained worldwide attention in 2016 when she became the first Somali-American to be elected to a state legislature. He was running Tuesday to be Minnesota attorney general.
Cody Fenwick is a reporter and editor.
Omar will not only be among the first Muslim women elected to Congress.
Swift had said that the Republican's voting record in Congress "appalls and terrifies" her, stating that Blackburn had voted against equal pay for women and against protecting women from domestic violence. After the start of the civil war in 1991, she and her family fled Somalia and spent four years in a refugee camp in Kenya.
The victory of Palestinian-American Talib, 42, was no surprise.
She shared: "We changed the course of history at a time we thought it was impossible".
Georgia governor's race candidate Stacey Abrams, a Democrat, was in a fierce battle to become America's first black woman governor, and Florida Democrat Andrew Gillum was bidding to become the first black governor of Florida.
On Tuesday night Democrats won control of the House, delivering a major blow to Trump in the first election since he became president in 2016.
She was born on July 24, 1976, to working-class Palestinian immigrants in Detroit and is the eldest of 14 children.
She has stated that President Donald Trump's "politics of fear" motivated her to run for the seat.