The center cannot hold

Primary elections are supposed to tell us where a political party is going. The 2026 results leading up to this year’s midterms are making that harder to determine.

Progressives have won some closely watched Democratic contests. Moderates have won others. Long-serving incumbents have faced serious challenges from younger candidates promising generational change. Each result can be explained individually. Taken together, it is harder to fit into the familiar story of a party moving left or right.

Earlier this year, I wrote about what I called The laws of political physics, recurring tendencies in political systems that operate regardless of party or ideology. The first two laws looked at how power sustains itself and how political actions generate reactions. They weren't intended to predict political outcomes, but to provide a framework for understanding the forces that shape them.

The current primary cycle brings two more of those laws into focus.

Law Three: The gravity of the center. In theory, electoral politics has a self-correcting force: parties that drift too far from the median voter lose elections and are pulled back toward the center. But the center isn’t fixed. It moves as the electorate changes.

Law Four: The conservation of discontent. Political dissatisfaction doesn't simply disappear when an election is won or a grievance is addressed. It gets redirected. The pressure remains; what changes is where it shows up.

The 2026 primaries offer a useful illustration of both, providing an early look at how the political center is shifting and where voter discontent may be showing up next.

Law Three: The gravity of the center

In theory, democratic politics should be self-correcting. Parties that drift too far from the median voter lose elections, get dragged back toward the center, and the system stabilizes.

This is one of the oldest ideas in electoral politics, and it's being stress-tested again right now.

The evidence is complicated. Among swing voters, the people who actually determine close elections, only a small share hold what researchers would describe as consistently centrist positions. The rest of the so-called "middle" is fragmented. Some lean left on economics and right on culture. Others hold combinations of views that don't fit comfortably within either party. Still others are simply anti-establishment.

"Moderate" is often not a position. It's a mood. The recent primaries make the point.

In Minnesota, Peggy Flanagan's victory over Rep. Angie Craig could be read as evidence of progressive momentum. In Connecticut, 47-year-old Luke Bronin's defeat of 78-year-old Rep. John Larson, who had held the seat since 1999, looks more like generational turnover. And in Wisconsin, voters went the other direction, with the more moderate David Crowley narrowly defeating democratic socialist Francesca Hong.

Nor is the pattern confined to Democrats. Minnesota Republicans went in a different direction, with state House Speaker Lisa Demuth defeating Trump-endorsed businessman Mike Lindell in the gubernatorial primary.

There is no obvious ideological line connecting those results. They may instead reflect different responses to the same underlying pressures. Dissatisfaction with the status quo may be one of them.

The lesson: the center is real, but it's not a fixed address. It moves with economic anxiety, cultural shifts, and generational change. Leaders who triangulate toward a center that no longer exists don't find stability — they find a vacuum.

Law Four: The conservation of discontent

This law is underappreciated, and it may be one of the most important right now: Political grievance doesn't disappear when you address it. It gets redirected.

Think of it as a pressure system. You can channel discontent, temporarily suppress it, or redirect it, but you can't eliminate it. Solve one complaint and the energy moves somewhere else. You can channel discontent or redirect it, but rarely eliminate it. Address one source of frustration and the political energy often moves somewhere else.

The United States offers a useful example. The discontent that shaped the 2024 election result has not simply disappeared because the election ended. Concerns about immigration, inflation, the cost of living, government effectiveness, and trust in institutions have evolved. Some have eased, some have intensified, and others have been replaced by new sources of frustration. The discontent has been redistributed.

For investors and political analysts, this is operationally important. A government that "wins" a political fight often discovers that it has simply relocated the pressure. The same can be true of elections. A decisive result can settle who governs without settling the political forces that produced it. The goal is to find out where the discontent went.

The practical read

These two laws together explain a trap that governments walk into repeatedly: they try to find a stable center while managing discontent, only to discover that both have moved.

That's what makes the 2026 primaries worth watching beyond the individual winners and losers because they provide an early indication of where political pressure is building ahead of November.

For investors, the distinction between a mandate for a particular agenda and one rooted in dissatisfaction is important. A coalition can agree that something needs to change without agreeing on how it should change, which makes the policy implications of an election harder to read. While the headline result may tell us who controls political power, it may tell us less about how that power will ultimately be used.

The most durable political positions aren't built by splitting the difference; they're built by understanding where the pressure in the system is coming from. That's a harder skill, and a more valuable one. As November approaches, watch where the center moves, and where the discontent goes next.