Welcome to the shutdown, 2025 edition. On Tuesday evening, the US Senate was unable to pass a spending bill that would have kept the US government funded, and for the first time in nearly seven years, federal operations have been drastically curtailed.

At some point, this shutdown – like all the ones before it - will end. It may take days; it may take weeks, but eventually, as public pressure and political pain grows, one side or the other will yield.

Here are four scenarios for how that might play out:

### 1. Democrats quickly break ranks
Senate Democrats shot down a Republican spending bill that would have kept the government operating until November, but that vote may have contained the seeds of their defeat.
While forty four Democrats (and Republican iconoclast Rand Paul) voted no, two Democrats and one Democrat-allied independent sided with the Republican majority. This may signal potential shifts in party unity that could lead to an end to the shutdown.

### 2. Democrats back down
Even if the Democrats stay (relatively) united, the pressure on them to abandon the fight is likely to increase as the shutdown drags on. Government employees are a key constituency in the party, and they will be the ones feeling the pain most immediately from delayed paycheques.

Typically the party that triggers a shutdown and is making the policy demands – in this case, the Democrats - is the one that accrues the public's blame.

### 3. Republicans make concessions
At the moment, Republicans feel like they are in a position of strength and are contemplating new ways to increase the pain felt by Democrats. However, they may be miscalculating, as the public could hold them responsible as well. They might consider offering concessions to the Democrats on health insurance subsidies, which could help defuse the situation.

### 4. The shutdown stretches on (and both sides lose)
If the shutdown continues long enough, it may not matter who wins by forcing the other side to fold. Both parties could face backlash from the public, setting the stage for political upheaval in future elections. As the political stalemate persists, dissatisfaction among voters may lead to significant changes in the political landscape.

This examination of potential outcomes reflects the growing complexity of U.S. politics and the shared accountability both parties may face in the upcoming elections.