The claim is false because the available Fox News poll reports Republican Mike Rogers leading Abdul El-Sayed 51 percent to 47 percent, not El-Sayed winning by six points.
New poll finds Abdul El-Sayed beating Republican Mike Rogers by 6 points in Michigan.

Michigan’s marquee Senate race close in first poll after El-Sayed primary win - The Washington Post
Source: washingtonpost.com
Key Evidence
Newsweek reports the relevant Fox News poll as Rogers 51 percent and El-Sayed 47 percent among registered voters, a four-point Republican lead.
The Rogers campaign independently repeats those figures, while The Washington Post describes the contest as close rather than reporting a six-point El-Sayed advantage.
Several other sources concern the primary or earlier polling and cannot substantiate the specific claim.
What the Evidence Shows
The most directly relevant evidence contradicts the statement. Newsweek reports that a Fox News poll released on August 13, 2026, had Rogers ahead of El-Sayed by four percentage points among registered voters, 51 percent to 47 percent. The Rogers campaign published the same result, although that source is partisan and therefore less independent.
The Washington Post's August 14, 2026, report characterizes the race as close after El-Sayed's primary victory, but its available summary does not indicate that El-Sayed was leading by six points. The New York Times polling page and other reporting establish that El-Sayed and Rogers are the general-election candidates, while earlier sources describe polling conducted before or around the Democratic primary and do not support the specific six-point claim.
The statement may have reversed the direction of the reported poll margin and changed a four-point Rogers lead into a six-point El-Sayed lead. On the evidence provided, there is no reliable support for the asserted six-point El-Sayed advantage.