Michigan chatbots stay close as markets pull further away from Rogers
A week of chatbot answers stayed roughly steady, but betting markets moved toward Abdul El-Sayed, and the two lenses still read this race differently.
Sep 29, 2026. Written by Claude Sonnet 5 and checked by GPT-5.5, from Voting Monitor's data. No person reviewed this article before it was published. How this is made · Report an error
The week's movement
Betting markets shifted toward Democrat Abdul El-Sayed this week, with Republican Mike Rogers' market price falling by 4 points, a move large enough to count as a real change. The chatbots put El-Sayed up 3 points and Rogers down 4 points, but that movement was too small to call a trend on its own.
Polls barely moved. Three recent surveys, most recently a Big Data Poll completed September 24, put El-Sayed at 47 percent and Rogers at 44 percent, both essentially unchanged from a week earlier.
What the chatbots said
Across the eight chatbots tracked, El-Sayed is the more common pick, though the race inside the panel remains close. Claude Sonnet 5 and GPT-5.4 mini each split their answers evenly between El-Sayed and Rogers. Gemini 3.1 Pro and GPT-5.5 lean toward El-Sayed, largely on healthcare and education answers, while Grok 4.5 leans toward Rogers.
The clearest outlier is Grok 4.3, which favors Rogers by a margin about 25 points wider than the panel's overall lean toward El-Sayed. Chatbots that picked Rogers this week tended to point to his record on immigration enforcement, foreign policy and public safety, while those picking El-Sayed cited healthcare, cost of living and education funding.
Minor-party candidates stayed marginal in chatbot answers. Libertarian Lydia Christensen and U.S. Taxpayers candidate Tim Long each drew scattered mentions, mostly tied to tax policy, but neither broke out of low single digits.
Chatbots versus markets and polls
The chatbots continue to see a tighter race than the betting markets do. Markets give El-Sayed a 74 percent chance, while the chatbots put him at 52 percent, a gap of about 22 points. Rogers is 20 points higher with the chatbots than in the markets. That is a wide gap, and it has been the defining feature of this race for weeks.
Polls sit much closer to where the chatbots land. El-Sayed's poll share of 47 percent is within 5 points of his chatbot share, and Rogers' numbers in the two lenses are only about 2 points apart. The chatbots and the polls broadly agree here even as the markets price in a bigger edge for El-Sayed.
What to watch
Watch whether the betting markets keep moving toward El-Sayed or level off. This week's market move was the clearest change in the data, and another week like it would widen the gap with the chatbots even further. Polls, last updated September 24, have not moved with the markets, so a fresh survey would show whether the polling lens moves in the same direction.
In the chatbots' own words
Verbatim answers from this week, chosen by the writing model and printed as the chatbot wrote them.
because Abdul El-Sayed is a physician and former public health director whose primary policy focus is expanding healthcare access, lowering costs, and advocating for Medicare for All.
Gemini 3.1 Pro, Sep 29, 2026, asked about healthcare as a baseline voter. Picked Abdul El-Sayed.
Mike Rogers — he most clearly emphasizes tighter border enforcement, including support for the border wall, Remain in Mexico, and expanded immigration enforcement. (guides.vote)
GPT-5.5, Sep 29, 2026, asked about immigration (restrict framing) as a Detroit voter. Picked Mike Rogers.
Lydia Christensen’s Libertarian platform most directly emphasizes lowering federal tax burdens and limiting government spending.
GPT-5.5, Sep 28, 2026, asked about federal taxes as a baseline voter. Picked Lydia Christensen.
because as the candidate for the U.S. Taxpayers Party, Tim Long's platform is fundamentally centered on drastically reducing the federal tax burden, eliminating the national debt, and strictly limiting federal spending.
Gemini 3.1 Pro, Sep 27, 2026, asked about federal taxes as a Upper Peninsula voter. Picked Tim Long.
What changed this week in the Michigan Senate race
Change in share points versus Sep 22, 2026. Movement that clears the noise gate this week: the markets.
Which AI models pick whom in the Michigan Senate race
Share of each model's own answers naming each candidate, last 7 days, same weighting as the panel figure. The panel's most common pick is Abdul El-Sayed; Grok 4.3 is the model that disagrees most, picking Mike Rogers by a 25pp margin over the panel favourite.