Put live prediction-market odds on your own site, free. One line of code, no account, no ads. The widget pulls prices straight from Polymarket every two minutes and works on WordPress, Substack-style blogs that allow HTML, Webflow, Squarespace, Wix, Ghost and plain HTML.
Paste it wherever your site accepts HTML. Keep the Bellwether link inside the code: it credits the data source and it is how the widget stays free.
What you get
- Live prices from Polymarket, refreshed every two minutes while the page is open.
- Seven-day trend lines on the Senate and House control cards.
- The closest races first, sorted by how far each sits from a coin flip.
- No tracking, no cookies, no ads. The widget runs in its own shadow DOM, so it cannot break your site's styles and your styles cannot break it.
How it is paid for
Each market row has a "Trade" link to Polymarket. If a reader opens an account through it, Bellwether earns a referral commission. Those links are marked as sponsored and the widget says "Affiliate links" in its footer. Nothing else is monetised, and nothing about your readers is collected.
Questions
Is it really free?
Yes, including for commercial sites. Please keep the credit link in the embed code.
Will it slow my page down?
The script is about 11 KB, loads asynchronously and does not block your page from rendering.
Can I show a market that is not about the midterms?
Yes. Choose "Any Polymarket market" and paste the market's address. It works for Fed decisions, crypto prices, geopolitics and anything else Polymarket lists.
What do the percentages mean?
They are prices, not forecasts: what traders are currently paying for a contract that pays out one dollar if the outcome happens. Our guide on how to read prediction market prices explains it in five minutes.