The CDU/CSU-SPD coalition survives the September 2026 super-election-year state votes — including AfD wins or leads in Saxony-Anhalt (6 Sept) and Mecklenburg-Vorpommern (20 Sept) — with no federal collapse, no dissolution, and no lost confidence vote in Merz through 31 December 2026.
Strongest counter — A pension- or budget-style backbench revolt (the December 2025 rebels passed the pension package by two votes) could actually topple a bill and cascade into a confidence crisis. It survives because a lost bill is not a lost government under the Basic Law, and both coalition partners fear a snap election — SPD ~12%, CDU ~22% — far more than they fear each other; state losses in the east change no federal seat.
Wrong if — the coalition formally collapses, the Bundestag is dissolved, or Merz loses a confidence vote (Vertrauensfrage) before 2027-01-01.