Coalition Government & Proportional Representation Across Europe

European Politics Fundamentals

Chapter 8 · Coalition Government & Proportional Representation Across Europe

Political Theory Fundamentals already covered Duverger's Law and Germany's own mixed-member proportional Bundestag system, including its real 2023 overhang-seat reform — that material isn't repeated here. This chapter picks up exactly where that one leaves off: once a proportional system has done its mechanical work and produced a fragmented parliament with no single majority party, what actually happens next? Two real, contrasting European cases — Germany and the Netherlands — show that assembling and sustaining a coalition government is a genuinely separate challenge from simply converting votes into seats.

Two Real Thresholds, Two Real Outcomes

	Germany	The Netherlands
Formal legal threshold	5% of the national vote	None — no legal minimum at all
Real effective threshold	5%	Roughly 0.67%, the vote share needed for just one of 150 seats
Constituency structure	Mixed-member proportional, local + national lists	A single nationwide constituency, using the D'Hondt method

The Real Consequence: 17 Parties in One Parliament The Netherlands' near-total absence of a threshold isn't a technicality — it produces genuinely extreme fragmentation. The March 2021 Dutch general election returned 17 separate parties with at least one seat in the 150-seat House of Representatives, a real, striking contrast to Germany's own 5%-threshold-filtered Bundestag.

The Real Cost: A 299-Day Coalition Formation

17 March 2021 The Dutch general election returns 17 parties with seats — no party close to a majority.
Through late 2021 Coalition talks drag on, breaking the country's own previous record of 225 days (set in 2017) by late October.
10 January 2022 A new government is finally sworn in — 299 days after the election, a real Dutch record.
The real result The four parties that formed the new coalition — VVD, D66, CDA, and CU — were the exact same four parties that had governed together before the election.

Almost a Year, for a Familiar Result The real, striking finding here isn't just the length of the delay — it's that 299 days of negotiation ultimately produced the same governing coalition the country already had. A near-zero electoral threshold makes it easy for a party to win seats, but it doesn't make it any easier to actually stitch several small parties into a workable government once they're all sitting in parliament.

The Dutch "Formateur" Process Dutch coalition talks follow a distinct real institutional custom: an "informateur" is first appointed to explore which coalition combinations are realistic, before a "formateur" (often the incoming Prime Minister) takes over to actually negotiate and finalize a coalition agreement — a formal, purpose-built role that Germany's own coalition-formation process has no direct equivalent for.

Germany's Real Coalition Agreements: Detailed, But Not Unbreakable

The 2021 "Traffic Light" Coalition

Following the 2021 federal election, the SPD, the Greens, and the FDP formed Germany's first-ever three-party federal coalition, nicknamed the "traffic light" coalition after their three traditional party colors (red, green, and yellow). On 24 November 2021 they announced a real, detailed 177-page coalition agreement titled "Daring to Make More Progress," formally signed on 7 December 2021 — a genuinely comprehensive governing document meant to bind all three parties to a shared policy program for the full parliamentary term.

A 177-Page Agreement Didn't Guarantee Survival On 7 November 2024 — not quite three years later — the coalition collapsed. Chancellor Olaf Scholz dismissed Finance Minister Christian Lindner (FDP) after months of real budget disputes, and the remaining FDP ministers resigned shortly afterward. Even a detailed written agreement, running to nearly two hundred pages, couldn't hold three parties together once their real underlying policy disagreements became irreconcilable.

The UK's Own Contrast, Briefly Noted

UK Politics Fundamentals already covers the UK's own First Past the Post system and its typical tendency to manufacture single-party majorities, complicated by real regional-party successes and the genuine hung parliaments of 2010 and 2017 — that material isn't repeated here. The relevant point for this chapter is one of degree, not an absolute rule: FPTP structurally discourages the kind of fine-grained fragmentation the Netherlands allows, making a genuinely multi-party coalition negotiation (of the Dutch or German kind) a rare event in the UK rather than the ordinary, expected outcome it is in both Germany and the Netherlands.

Tying Back to Duverger's Law

The Mechanical Effect Is Only Half the Story Political Theory Fundamentals' own treatment of Duverger's Law explains why proportional systems allow more parties into parliament in the first place — the mechanical effect of translating vote share into seat share with less distortion than a plurality system like FPTP. This chapter's own real cases show a genuinely separate, second-order consequence: once those parties are in parliament, actually forming and sustaining a government from among them is its own distinct challenge, with its own real costs (299 days of political limbo in the Netherlands) and its own real failure modes (a detailed 177-page agreement still collapsing in Germany after less than three years).

Hands-On Exercises

Exercise 1 — Threshold and Fragmentation

Using the real Dutch effective threshold of roughly 0.67% against Germany's real formal 5% threshold, explain why the Netherlands ended up with 17 parties holding seats in 2021 while Germany's own Bundestag stays considerably more consolidated.

→ Solution

Exercise 2 — Why 299 Days Still Produced the Same Coalition

Using the real 2021–2022 Dutch cabinet formation, explain why a coalition negotiation lasting 299 days can still end up with the exact same four governing parties the country already had — what does this suggest about what coalition negotiations are actually spending their time resolving?

→ Solution

Exercise 3 — A Detailed Agreement Is Not a Guarantee

Using the real German traffic-light coalition's 177-page agreement and its November 2024 collapse, explain why a highly detailed written coalition agreement reduces, but does not eliminate, the risk of a coalition falling apart mid-term.

→ Solution

Quick Reference — Chapter 8

Germany applies a formal 5% electoral threshold; the Netherlands has no legal threshold at all, with a real effective threshold of roughly 0.67% (one of 150 seats in a single national constituency)
The Netherlands' 2021 election returned 17 parties with seats — a direct, real consequence of that near-zero threshold
Forming a coalition from that fragmented result took a record 299 days (10 January 2022), and ultimately reassembled the same four governing parties that had held power before
Dutch coalition talks use a distinct real "informateur" then "formateur" institutional process, with no direct German equivalent
Germany's own 2021 three-party "traffic light" coalition produced a real, detailed 177-page governing agreement — which still didn't prevent its collapse on 7 November 2024

What's Next

Chapter 9: Euroscepticism & Real Challenges to EU Integration.