DETROIT: Democrat Abdul El-Sayed won Michigan's US Senate race over former Republican lawmaker Mike Rogers, US networks said early Wednesday, making him the first Muslim elected to the upper chamber of Congress.

"Michigan, we did it!" El-Sayed said in a speech attended by hundreds of supporters who screamed and hugged each other at his election headquarters in Detroit.

"I am so proud and honoured to stand here as your senator-elect from the great state of Michigan."

El-Sayed won despite a last-minute curve ball in his campaign when congresswoman Haley Stevens, who lost the Democratic primary to El-Sayed, came out in support of Rogers at the 11th hour.