Germany’s February 2025 Election: What Merz’s Narrow Coalition Math Means for Europe

The Numbers Tell a Story of Fragmentation and Constraint

Let’s start where all serious election analysis must begin: the actual results. On February 23, 2025, German voters delivered what looked like a clear verdict and what turned out to be a complicated puzzle. The CDU/CSU alliance secured roughly 28.5% of the vote, its strongest performance since 2017. This was real. This was substantial. And yet, if you understand how German coalition mathematics work, you immediately recognize that 28.5% is not a mandate to govern alone.

Here is what makes German politics different from what many English-speaking observers expect: you do not need a majority of the vote to form a government. You need a majority of seats in the Bundestag. The CDU/CSU’s 28.5% translated into enough seats to make them kingmakers, but not kings. The real story is in what happened around them.

The Federal Returning Officer official 2025 Bundestag results show that the AfD, the right-wing populist Alternative for Germany party, finished second with approximately 20.8% of the vote. Their best federal election performance ever. Let that sink in. This was not a freak result. This was the culmination of a trend accelerating for years. The traditional center collapsed further. The SPD, governed by outgoing Chancellor Olaf Scholz, fell to around 16.4%. That is the worst result for the Social Democrats in a federal election since World War II. The era of predictable two-party dominance in Germany is definitively over.

The Slim Margin and Why It Matters

Friedrich Merz did not walk into the chancellery with a comfortable cushion. When the dust settled and coalition talks concluded, Merz was confirmed as Chancellor in April 2025, leading a grand coalition between the CDU/CSU and the SPD. Germany’s third such “GroKo” since 2005, which matters more than it might initially appear.

Grand coalitions in Germany work like this: the two largest parties across the left-right spectrum agree to govern together, splitting ministerial portfolios and policy priorities. The math favors stability. The politics often produces gridlock. When your coalition partner controls enough seats that you cannot govern without them, every negotiation becomes zero-sum. Every budget line item, every legislative priority, every appointment becomes a bargaining chip.

But there is a threshold question that haunts every narrow coalition in parliamentary systems: what happens when one partner faces electoral pressure to differentiate itself from the other? The SPD’s historic collapse to 16.4% means they are not entering this coalition from a position of strength. They are entering from desperation. They need to demonstrate that they can still deliver something their voters care about, or face further erosion. The CDU/CSU, meanwhile, is trying to avoid the appearance of governing for the wealthy and the established while a popular right-wing party captures nearly a quarter of the electorate.

The Debt Brake Debate and Europe’s Economic Stability

Germany faces a structural deficit estimated at over €100 billion. This is not a small accounting adjustment. This is a fundamental gap between what the government commits to spend and what it collects in revenue. The conversation around how to address this deficit dominated early coalition talks and will continue to define what this government can and cannot do.

The Schuldenbremse, commonly translated as the debt brake, is Germany’s constitutional limit on government borrowing. It allows federal borrowing of only 0.35% of GDP in normal economic times. Reforming or suspending it would require a two-thirds majority in the Bundestag. That is possible with a grand coalition holding roughly 52% of seats, but it requires discipline and political will that are both currently in short supply.

Why does this matter beyond Germany’s borders? Germany is the economic engine of Europe. German fiscal policy choices ripple across the continent. If Merz’s government cannot figure out how to close that €100 billion gap through spending cuts, tax increases, or debt brake reform, it will constrain Germany’s ability to invest in infrastructure, defense, and the transition to renewable energy. At a moment when Europe faces threats from Russia and structural challenges from Chinese competition, a fiscally paralyzed Germany is a problem for everyone.

Coalitions Under Pressure: What the AfD’s Rise Means for Governance

Every member of Germany’s mainstream political establishment faces one hard reality: the AfD came in second with 20.8% of the vote and will sit in the Bundestag as a significant parliamentary force. They are excluded from coalition negotiations by explicit agreement among all other parties. No coalition partner will work with them. But exclusion is not the same as powerlessness.

A narrow CDU/CSU-SPD coalition must govern knowing that if they lose more than a handful of members to defection, they lose their majority. This creates perverse incentives. Controversial votes become harder to call. Grandstanding becomes more tempting because each party needs to show its base that it is fighting for them against the other coalition partner. Discipline and internal party management become critical to survival.

The rise of the AfD also creates a psychological pressure that should not be underestimated. When a major party captures one-fifth of the electorate, it signals that large segments of the population feel unrepresented by existing options. Some of this reflects legitimate grievances. Some reflects xenophobia and nostalgia. Most likely it is both, mixed together in ways that are hard to untangle. A coalition government locked in continuous internal negotiation is poorly positioned to address the root causes of that alienation. It can only respond to the symptoms, and often poorly.

What Narrow Coalition Governance Actually Means in Practice

Here is what coalition mathematics look like when translated into daily governance. Every policy initiative requires negotiation. Cabinet meetings become more like treaty talks between sovereign governments than internal party deliberations. Legislation moves slowly because both coalition partners must sign off. Compromise often means the lowest common denominator rather than the best available option.

The CDU/CSU secured 28.5% and the SPD 16.4%. Together they control roughly 52% of the Bundestag. A working majority, yes. But not a comfortable one. A few defections, a few absences, a few moments of parliamentary drama and the entire coalition is suddenly fragile. This concentrates power in the hands of party discipline and senior negotiators, while backbench voices from smaller delegations can punch above their weight.

For European observers watching from Paris, Brussels, or Warsaw, this matters because it affects Germany’s ability to commit to collective European decisions. A narrowly constructed coalition takes longer to make decisions. It is more reactive than proactive, more focused on managing internal dynamics than on long-term strategic thinking. That is not a moral failing. It is a structural reality of narrow coalition mathematics.

The Path Forward and Your Role as an Engaged Citizen

Friedrich Merz governs Germany with a coalition that will require constant management and renegotiation. The 28.5% for the CDU/CSU was real. The 20.8% for the AfD was real. The SPD’s historic collapse to 16.4% was real. These are not matters of opinion or interpretation. These are facts recorded by the Federal Returning Officer and available for anyone to examine.

What happens next depends on how well this coalition manages its internal contradictions while addressing real problems. Can Merz reform the debt brake without blowing up the coalition? Can the CDU/CSU and SPD find common ground on energy policy, wages, and defense spending? Can they do any of this while the AfD sits in parliament capturing headlines and drawing voters who feel left behind?

These questions matter not just for Germans but for all Europeans. If you care about how your own government relates to Europe, if you want to understand why European unity is harder than it looks, German coalition politics offers a window into the machinery. Dig into these questions. Look at the actual election results. Follow the Bundestag proceedings. Think about what narrow coalitions mean for decision-making.