State Election in Rhineland-Palatinate: CDU Hits Historic Low

Historic Low for the CDU

The state election in Rhineland-Palatinate on March 22, 2026, triggered a political earthquake: The CDU, led by top candidate Gordon Schnieder, achieved its worst result in the history of the state with 27.7 percent. Around 2.95 million eligible voters were called upon to cast their votes for the 19th state parliament — the result is considered a major setback for the Christian Democrats and a mood test for federal politics.

Before the election, the latest polls — including the ZDF Politbarometer — had still seen the CDU at 28 to 29 percent. The fact that the party fell below this mark is exacerbating the debate about the course of Federal Chancellor Friedrich Merz and his newly formed Black-Red coalition at the federal level.

Greens Ahead of AfD — SPD Defends its Stronghold

While the CDU weakened, the Greens, led by top candidate Katrin Eder, were able to establish themselves as the third-strongest force in the new state parliament with 9.3 percent. The AfD suffered significant losses and landed far below the poll values of around 19 percent, which had been predicted for them shortly before election day, with only 8.3 percent. The FDP came in at 5.5 percent.

The SPD under Minister President Alexander Schweitzer, who took over the office from Malu Dreyer in July 2024, was able to defend its uninterrupted period of government since 1991. Rhineland-Palatinate thus remains a traditionally social democratic state — despite the close head-to-head race that polling institutes such as Infratest dimap and Forschungsgruppe Wahlen had predicted.

Signal for Berlin

The results from Mainz send an uncomfortable signal to the federal government. As the Federal Agency for Civic Education had already analyzed in advance, the election was considered the first major mood test for the new Black-Red coalition in Berlin. The CDU result is likely to exacerbate tensions between the coalition partners CDU and SPD at the federal level.

Particularly explosive: Just one week earlier, the CDU had suffered a sensitive defeat in Baden-Württemberg. Two state elections in a row without a positive signal for the federal party — this puts Chancellor Merz under considerable pressure, as ZDFheute emphasized in an analysis.

Coalition Question and Outlook

The formation of a coalition in Mainz will be a challenge. The previous traffic light coalition of SPD, Greens and FDP is facing a recalculation in view of the changed power relations. A grand coalition of SPD and CDU would also be conceivable — an alliance that could, however, additionally strain the already tense cooperation between the two major parties at the federal level.

According to polls, education, infrastructure and municipal finances dominated the election campaign. Observers interpret the fact that the AfD fell significantly behind its poll values as a sign of a mobilization of the democratic center at the last minute.