Current Market Outlook

Kalshi traders give only a 38% probability that total voter turnout in Montana's Senate general election will exceed 710,000. That means the market sees a sub-50% chance of hitting that threshold, which is a surprisingly low bar given Montana's recent voting history. In 2020, the state recorded roughly 610,000 total votes in the presidential election. But 2024 is a Senate race featuring incumbent Democrat Jon Tester versus Republican challenger Tim Sheehy, one of the most expensive and closely watched contests in the country.

Key Factors Driving the Odds

Montana's population has grown since 2020, adding about 50,000 residents. The state now has roughly 1.1 million people. But voter turnout in midterm Senate races tells a different story. In 2018, when Tester last won reelection, total turnout was around 490,000. In 2012, it was about 480,000. The 710,000 threshold is nearly 50% higher than any Senate race in the last decade.

The market is pricing in skepticism that even a high-profile presidential-plus-Senate cycle can push turnout that far. Presidential election turnout in 2020 was 610,000, and that was with record-high interest. Adding another 100,000 votes requires either massive population influx or an extraordinary mobilization effort that neither party has demonstrated historically.

What Could Change These Odds

The biggest catalyst is the Sheehy campaign's ground game. Sheehy has raised over $20 million, much of it from out-of-state donors, and his team has been running aggressive voter registration drives in rural counties. If those efforts show early returns in absentee ballot requests or early voting data, the odds could shift upward.

Conversely, if turnout in Montana's primary election in June 2024 comes in below 250,000, that signals low enthusiasm and makes 710,000 look even more unlikely. The primary results will be the first concrete data point, likely available by late June 2024.

Cross-Platform Analysis

This market trades exclusively on Kalshi, so there's no arbitrage opportunity. But the lack of Polymarket pricing is itself notable. Polymarket typically lists high-interest election contracts, and its absence suggests traders see this as a niche or low-liquidity question. That means the 38% price may not reflect deep conviction, just thin trading volume from a few active accounts.