How to Bet on Politics

Betting is usually associated with sport — horse racing, football, slots, lotteries — but you can, in theory, bet on almost anything, including events in the real world. That ranges from the trivial (the name of a royal baby) to the consequential (who becomes leader of the free world).

Arguably the real world offers superior betting opportunities. There’s a mathematical chance attached to any future outcome, which a bookmaker or bettor can estimate, and that calculation won’t be skewed by a bad refereeing decision, an unfortunate run of cards or your horse being brought down by another. Politics is the perfect example, and it has grown exponentially this century with no sign of peaking.

Why political betting has exploded

Take the US presidential election. Turnover on Betfair’s election-winner market grew sixfold between 2012 and 2016, then sevenfold again to 2020, when roughly $1.7bn was matched on that single market with one firm alone. Since then the picture has changed again: by the 2024 cycle, prediction markets had become a mainstream news story in their own right, and they correctly tipped Donald Trump’s victory while some pollsters hedged.

In 2026 the genre is bigger than ever. Weekly volumes across the major event-contract platforms now run into the billions, and the next blockbuster is already here: the US midterms on 3 November 2026, with all 435 House seats and 35 of the 100 Senate seats contested. The markets have swung hard, too — by mid-2026, traders had moved the Senate from a safe Republican hold towards a near coin-flip, with Democrats favoured to take back the House. Betting on the 2028 presidential race is already live alongside it.

Where can I bet on politics?

All the major UK high-street firms price elections — bet365, Paddy Power, William Hill, Ladbrokes, Betfred and Sky Bet among them — and specialists like Star Sports are always keen to frame a market. For exchange betting, Betfair are the big players with the deepest liquidity, with Smarkets the main rival; both let you back and lay outcomes, much like a prediction market in all but branding. For spread betting on seat totals, Spreadex is now the dominant UK firm. You can compare licensed options on our betting hub.

What about the platforms that dominate the global headlines? Polymarket and Kalshi drive much of the noise, but UK access is the catch: Polymarket publishes geographic restrictions and bans VPN workarounds, Kalshi limits access by country, and the Gambling Commission’s position is that gambling-style prediction markets offered to British consumers need a UK licence — most likely as a “betting intermediary”. If you’re weighing them up, start with can UK players use prediction markets?, what is Polymarket? and what is Kalshi?

Why bet on it?

Many bet on politics for fun or the thrill of backing their team, as they would in sport. But plenty treat it as a serious investment, short or long term. Predicting politics is a game of skill where knowledge pays and luck rarely comes into it. In my experience as a professional gambler, the percentage returns are higher than sport, the formbook is more reliable, and short-odds favourites very rarely lose.

Consider the record. In nearly every UK general election this century, the favourite going into polling day won the most seats by comfortable margins — and was usually favourite 100 days out, too. In US presidential elections, Trump’s 2016 win remains the standout exception to the favourite prevailing. Reading a price as a probability is the same discipline as implied probability in sport, and the prices move for the same reasons that betting odds change elsewhere.

Do I need to be an expert?

No. Anybody can form a credible opinion on who will win an election, and expert predictions are far from always right. But it’s worth reading the form. After 25 years in the game I’m still learning all the time: the better you understand a district, an electorate, the quality of a particular poll and its findings, the sharper your predictions become. The faster you digest relevant news, the better the value you’ll find, and the wider your perspective, the easier it is to cut through the media noise.

Where do I learn about it?

For polling, use respected non-partisan aggregators and models. A note of caution on a source the original version of this guide recommended: ABC shut down FiveThirtyEight in 2025, so it’s no longer a live tracker. Today I’d point readers to Nate Silver’s Silver Bulletin, Decision Desk HQ, the Cook Political Report and Sabato’s Crystal Ball, plus the polling averages most serious newspapers now build themselves. Treat any single model as one guide, not a figure to correlate exactly with the odds.

To follow the wider conversation, read widely across the spectrum, watch outlets on both sides, and follow campaigns and surrogates on social media — while remembering they’re each pushing a preferred narrative. In a post-truth world, the real edge is learning to fact-check and rank the reliability of your sources.

Six ways to bet on politics

1. Elections and referenda

These are the biggest events. The US election is by far the most popular, followed by the UK, but every major global election is now a serious market — Argentina, Brazil and Turkey have all smashed turnover records recently. Major referenda can be vast too: Britain’s EU referendum was briefly the biggest single market in Betfair’s history, sport included, until the 2016 Trump–Clinton race overtook it. In a UK election there’s a market on all 650 constituencies; in the US, on each state, Senate race and competitive House district.

2. Election derivatives

The winner is the headline, but there’s an almost infinite supply of side markets, and that’s often where the strongest angles hide: winning margin in percentage or seats, each party’s vote share or seat total, which result is declared first. These reward research more than the main market does — the same edge-hunting logic behind arbitrage.

3. Leadership contests and primaries

Whenever a party changes leader there’s betting on the successor; in the US, every race has a primary. Unlike headline elections, upsets are frequent here. Kamala Harris traded above 50/1 to be the 2024 Democratic nominee before Biden stepped aside; Trump was 25/1 when he became the Republican nominee in 2016; in the UK, Liz Truss and Jeremy Corbyn both overcame dismissive early odds. This is exactly the kind of market unfolding in the UK right now — with Keir Starmer under sustained pressure, the next-Labour-leader book has been led by the likes of Andy Burnham and Angela Rayner, names available at long odds not long before.

4. Exit dates and resignations

The moment a leader takes power, betting opens on when they’ll leave. We saw extraordinary drama around Joe Biden’s withdrawal in 2024, and the last UK parliament removed two prime ministers, Truss and Johnson, earlier than expected. In 2026 the live example is Starmer’s exit-date market, where bookmakers have made a mid-year departure window a clear favourite amid Labour’s polling collapse and Reform UK’s surge to odds-on for most seats at the next election. Knowledge is power: the keenest observers usually see the writing on the wall first.

5. Flagship TV events

Big set-piece broadcasts — presidential debates, the State of the Union, even one-off live-streamed interviews — generate thousands of markets, from who wins according to polls to how many times a given word is said, or whether the candidates shake hands. The 2024 Trump–Harris debate was a classic of the genre. These are mostly fun markets that bookies restrict to low stakes, but they’re hugely popular to follow.

6. Trade politics like stocks

The arrival of exchanges this century turned politics from occasional standalone events into a constant betting cycle. Rather than simply taking a bookmaker’s price, you can trade in and out of candidates, effectively buying and selling shares as they fluctuate — closer to cashing out than a one-and-done bet. The 2024 cycle was a masterclass in volatility: Harris opened around 4/1 when betting began, drifted to 149/1 while Biden clung on, crashed to odds-on once she replaced him — then lost to Trump in November, a reminder that even odds-on favourites fall. Within seconds of the next US result, 2028 markets will reprice in real time, and in-play election-night betting is now as big as any sport: in 2020, more than half the money on the main Betfair market was traded after polls closed.

A note on rules, protection and staying sensible

Politics markets settle on published rules just like sport, so check how a firm handles voided or disputed outcomes before you commit — the same care you’d apply to a void bet. Stick to UK-licensed operators so you keep the protections that come with them, and be wary of using a VPN to reach a restricted offshore platform. Above all, treat it as entertainment first: the skill is real, but so is the risk, and a staking plan you can afford matters more than any single forecast. If you’ve never experienced the betting on a US election night, it’s worth watching — just keep the stakes sensible.

Sources

• UKGC — Prediction markets: what you need to know
• UKGC — Public register (check an operator’s licence)