Voters elected a black Democrat as the first Muslim in Congress on Tuesday after a race in which he advocated quick US withdrawal from Iraq and made little mention of his faith.
Keith Ellison, a 43-year-old lawyer and state representative, defeated two rivals, television networks said, to succeed retiring Democrat Martin Sabo in a seat that has been held by Democrats since 1963.
Ellison, who converted to Islam as a 19-year-old college student in his native Detroit, won with the help of Muslims among a coalition of liberal, anti-war voters.
He advocates an immediate US withdrawal from Iraq along with strongly liberal views.
While Ellison did not often speak of his faith during the campaign, awareness of his candidacy drew interest from Muslims well beyond the district centered in Minneapolis.
A significant community of Somali immigrants in Minneapolis cast their first votes for him in the crowded September primary.
Ellison also was the surprise choice of party regulars.
While Muslim-Americans make up less than 3 per cent of the US population and have largely been a non-factor in terms of political power, get-out-the-vote efforts in several Muslim communities could indicate they may become an emerging force.
Roughly 2 million Muslims are registered US voters, and their ranks increased by tens of thousands in the weeks prior to yesterday's mid-term elections, Muslim groups have said.
Since the September 11, 2001, attacks by Islamic militants, Muslim-Americans have become sensitised to what many feel is an erosion of their civil rights.
US foreign policy that targets Muslim countries also has generated a sense of urgency, experts said.
"(Americans) treat us differently after September 11. My own father was attacked," said Ellison supporter Khadra Darsame, a 1995 immigrant from Somalia. "Ellison said everybody matters equally and he told us what he would do ... He will do the right thing."
Born into a Roman Catholic family in Detroit, Ellison said his values were shaped by both faiths, along with his grandfather's civil rights work in the Deep South.
Opponents focused on Ellison's sloppy handling of his taxes and a slew of unpaid parking tickets, along with his one-time affiliation with the Nation of Islam, whose leader, Louis Farrakhan, has been criticised for making anti-Semitic remarks.
Ellison subsequently said he worked with the group largely to promote the 1995 Million Man March.