When Slim Majorities Reshape Continents
Let me walk you through something that happened on February 23, 2025, that deserves more attention than it got in most news cycles. Germany held a federal election. Sounds straightforward. But the arithmetic that followed, and the coalition that emerged from it, tells us something crucial about the state of European democracy and stability right now. Friedrich Merz and the CDU/CSU won roughly 28.5 percent of the vote. That’s their best showing since 2017. It sounds solid. It isn’t.
Here’s where it gets interesting for anyone paying attention to how democracies actually function. A 28.5 percent plurality in Germany doesn’t automatically translate to power. The Bundestag has 630 seats, which means you need 316 to form a government. The CDU/CSU’s coalition math was tight. Uncomfortable. By April, Merz had secured the chancellorship leading a grand coalition with the SPD. Their combined vote share gave them a working majority. But “working” is the operative word here.
To understand why this matters beyond Berlin, you need to understand what a slim majority actually costs a government. Every legislative priority becomes a negotiation. Your coalition partners have leverage. And leverage, in a fractious moment for Europe, is worth examining closely.
The Historical Pattern: Grand Coalitions as a Sign of Fragmentation
Let’s put this in perspective. This is Germany’s third grand coalition (GroKo) since 2005. Three times in two decades, the two largest centrist parties had to climb into bed together because no other arithmetic worked. Think about what that signals. The political center isn’t holding its ground anymore.
Historically, grand coalitions aren’t a sign of political health. They’re a symptom. Weimar Germany saw them repeatedly in the late 1920s, each one more unstable than the last. Post-war German democrats learned this lesson. They designed their system to avoid exactly this scenario. And yet here we are.
The difference between 1920s Weimar and 2025 Berlin is profound, and that matters. Modern Germany has institutional guardrails. But the pattern is worth noting: when your two biggest moderate parties have to govern together, it usually means the extremes are growing and the political space between them is shrinking.
The Numbers That Should Concern You: The AfD’s Historic Performance
The real story of February 2025 isn’t what the CDU/CSU won. It’s what the AfD achieved. The right-wing Alternative for Germany pulled in roughly 20.8 percent of the vote. Their best-ever federal result. They’re now the second-largest party in the Bundestag. Let that sink in for a moment.
The SPD, meanwhile, collapsed to around 16.4 percent. Chancellor Scholz’s party suffered its worst federal election result since the end of World War II. When your governing coalition partner is losing that badly and your opposition is surging, your coalition becomes more fragile, not less.
This is where historical analogies get tricky, and I want to be careful here. We’re not in a Weimar scenario. German institutions are stronger. The economy is more robust. The rule of law functions. But the trajectory—mainstream parties shrinking, extremes expanding—that’s a pattern historians recognize. And it should prompt serious thinking about what happens when Merz’s slim majority faces its first real test.
The Deficit Crisis: Where Coalition Cracks Will Show
Here’s the practical challenge that will define whether this coalition holds. Germany faces a structural deficit exceeding 100 billion euros. That’s not a rounding error. That’s a policy crisis waiting for a decision. And the decision is going to hurt.
The centerpiece of this debate is the Schuldenbremse, Germany’s constitutional debt brake. It’s been the fiscal backbone of German politics for over a decade. Reforming it means amending the constitution, which requires a supermajority. In theory, the CDU/CSU and SPD have those numbers. In practice, constitutional reform requires consensus that goes beyond arithmetic.
Coalition partners disagree on whether to reform the debt brake or cut spending to meet it. The SPD will push for flexibility. The CDU/CSU traditionally favors stringency. With such a narrow majority, both sides have leverage to demand concessions. Merz will have to choose between appeasing his coalition partner and disappointing the fiscal hawks in his own party. That’s the kind of choice that tests coalitions. It’s the kind of choice that, under pressure, can break them.
European Stability and the Cost of Weak Governments
Why should you care about German coalition math if you don’t live in Germany? Because Europe’s stability depends on Germany having a functioning, reasonably coherent government. Germany is the continent’s largest economy. It’s the engine of EU policymaking. When Germany has a weak government, Europe feels it.
A government with a slim majority operates differently than one with a comfortable buffer. It’s more reactive. Less able to take strategic risks. More vulnerable to external shocks. If you’re thinking about Ukraine policy, industrial competitiveness, climate regulation, or any of the major questions facing Europe, German government stability matters.
Merz comes to office with genuine experience and a track record as a serious operator. That’s not nothing. But he’s leading a coalition where both parties have reasons to be cautious. The CDU/CSU wants to prove fiscal discipline. The SPD wants to prove it can deliver for workers facing cost-of-living pressure. These aren’t irreconcilable goals, but they’re not automatically aligned either.
Looking at the Federal Returning Officer official 2025 Bundestag results and checking the Bundestag official website on the 21st German Parliament, you can trace exactly how narrow the coalition’s margins are. That’s not just German politics. That’s European politics.
What This Means for Democracy in Practice
Here’s what I find genuinely interesting about this moment, and why I keep coming back to it. Merz’s slim majority is a test of democratic governance under pressure. Can a centrist coalition hold together when facing fiscal crisis, institutional challenges, and rising extremism on both flanks? We’re watching that experiment in real time.
The answer matters beyond Germany. It tells us something about whether modern liberal democracies can manage difficult problems with narrow majorities. Can they compromise? Can they lead decisively without overwhelming consensus? Can they stay coherent when it would be easier to fracture?
These aren’t abstract questions. They’re the practical machinery of how democracies survive moments of stress. Merz and his coalition have narrow margins. History suggests that tests them. We’ll see how they respond when the real pressure comes. If you’re interested in how democracies actually function—not in theory, but in the grinding work of coalition management and legislative compromise—Germany over the next several years is exactly where to look. What questions are you thinking about regarding this election and its implications for European politics?
