German President Frank-Walter Steinmeier has warned that political division and disinformation are placing growing pressure on the country’s democratic institutions after a succession of state elections weakened Chancellor Friedrich Merz’s Christian Democrats and strengthened parties outside Germany’s traditional political centre.

Speaking during German Unity Day celebrations, Steinmeier compared the present political climate with divisions associated with the Weimar Republic, while stopping short of saying that Germany had reached such a point.

His intervention follows a difficult September for Merz.

Alternative for Germany won 43.8 per cent in Saxony-Anhalt, while in Mecklenburg-Western Pomerania the AfD finished first with 38.2 per cent. Merz’s CDU recorded just 4.9 per cent in the latter state, leaving it outside the regional parliament for the first time.

Berlin produced a different winner but a similar problem for the established parties, with Die Linke taking first place.

The combined results have accelerated the fragmentation of a party system that for much of the post-war period revolved around two large political blocs.

EU Today examined that shift after the September elections, arguing that Germany’s political centre was losing voters in several directions at once.

Steinmeier did not confine his warning to electoral arithmetic.

He criticised the use of political demagoguery and warned that organised disinformation was damaging democratic debate. He referred to material originating from Kremlin-linked actors, domestic extremists and other networks using digital platforms to amplify manipulated information.

The remarks come during an increasingly difficult period for Merz.

The Chancellor took office promising to restore economic momentum and political stability. Instead, Germany continues to face concerns about industrial competitiveness, living standards, energy costs and the ability of its political system to absorb an increasingly fragmented electorate.

The pressure is particularly evident in eastern Germany.

Before September’s elections, EU Today noted that Merz was approaching a political reckoning in the east, where the CDU was losing ground while the AfD converted dissatisfaction over migration, energy, economic policy and distrust of established institutions into electoral support.

The subsequent results were worse for the CDU than many in the party had anticipated.

In Saxony-Anhalt, the AfD finished more than 26 percentage points ahead of the CDU. In Mecklenburg-Western Pomerania, the CDU failed even to cross the threshold for parliamentary representation.

The consequences extend beyond German domestic politics.

Germany remains the EU’s largest economy and one of the principal states shaping European decisions on Ukraine, defence, migration, fiscal policy and industrial competitiveness. Political instability in Berlin can therefore affect negotiations in Brussels as well as the domestic legislative programme.

Economic policy is central to the dispute.

Germany’s manufacturing sector has faced stronger competition from China, while the rupture of the previous economic relationship with Russia has increased costs for energy-intensive industries. Russia’s continuing war against Ukraine has simultaneously required Berlin to spend more on defence and provide substantial assistance to Kyiv.

The German cabinet’s 2027 budget reflects that change. The government has approved federal expenditure of €555.4 billion, including €109.7 billion for the Defence Ministry and €11.6 billion for continued support to Ukraine.

The political difficulty is that higher security expenditure comes alongside pressure to invest in infrastructure, public services and an economy struggling to recover stronger growth.

The rise of the AfD has consequently become more than a debate over whether other parties should maintain the so-called firewall preventing formal co-operation with it.

The more difficult question for Germany’s established parties is why voters are abandoning them and whether economic and political dissatisfaction can be reversed through government policy rather than coalition arrangements designed chiefly to exclude competitors from office.

Steinmeier’s intervention places that argument inside a historical frame familiar to Germans.

The Federal Republic’s post-war institutions were deliberately designed to avoid the failures of the interwar period. But constitutional safeguards alone cannot prevent political fragmentation if large groups of voters cease to regard established parties as capable of responding to the issues that concern them.

Germany enters the final months of 2026 with that question moving from the margins of its politics to the centre.