# Sinja Münzberg elected president as new mayors took office in Lower Saxony

*Politics. 47% certain. Sunday, 13 September 2026*

> Speculative fiction assembled from prediction-market prices. This has not happened.

**New mayors took office in six Lower Saxony cities and Sinja Münzberg became Hannover Region president.**

On Sunday 13 September, Mayoral elections were held across six Lower Saxony cities. Voters chose Katharina Pötter in Osnabrück, Belit Onay in Hannover, Thorsten Kornblum in Braunschweig, Frank Klingebiel in Salzgitter, Jascha Rohr in Oldenburg and Onyeka Oshionwu in Göttingen. The same day, Sinja Münzberg was elected president of the Hannover Region.

In Osnabrück, Katharina Pötter prevailed over Robert Alferink and Thorsten Wassermann, while in Hannover, Belit Onay defeated Axel von der Ohe, Peter Karst and Maren Kaminski.

Thorsten Kornblum won the Braunschweig Mayoral race, outpacing Michael Walther and Maximilian Pohler. In Salzgitter, Frank Klingebiel emerged victorious against Tobias Bey and Holger Dahms. Oldenburg voters selected Jascha Rohr over Ulf Prange.

Onyeka Oshionwu secured the Göttingen mayoralty, defeating Florian Dinger and Ehsan Kangarani. The Hannover Region Presidential election saw Sinja Münzberg beat Nicolas Lehrke. Both elections concluded on Sunday, completing the regional ballot.

The six cities, Osnabrück, Hannover, Braunschweig, Salzgitter, Oldenburg and Göttingen, are all located in Lower Saxony. Their Mayoral contests and the regional presidency were decided on the same day.

## Analysis

Sinja Münzberg's election as Hannover Region president adds a layer of regional oversight that will interact with the six new mayors, potentially influencing budget allocations and inter-city projects that require coordination beyond municipal limits.

Each new mayor now faces the immediate task of forming administrative teams and setting priorities, while also navigating relationships with the state government, which may have its own agenda for Lower Saxony's development and funding.

How the new leadership will align their local agendas with regional and state objectives remains uncertain; the coming months will reveal whether a cohesive approach emerges or if divergent priorities lead to fragmented governance.

## What this was built from

- **Osnabrück Mayoral Election Winner**: Katharina Pötter, 86%; settles Sunday, 13 September 2026 (polymarket). [Market](https://polymarket.com/event/osnabruck-mayoral-election-winner-20260723172818472)
- **Hannover Mayoral Election Winner**: Belit Onay, 76%; settles Sunday, 13 September 2026 (polymarket). [Market](https://polymarket.com/event/hannover-mayoral-election-winner-20260723155039214)
- **Braunschweig Mayoral Election Winner**: Thorsten Kornblum, 89%; settles Sunday, 13 September 2026 (polymarket). [Market](https://polymarket.com/event/braunschweig-mayoral-election-winner-20260723164513786)
- **Salzgitter Mayoral Election Winner**: Frank Klingebiel, 96%; settles Sunday, 13 September 2026 (polymarket). [Market](https://polymarket.com/event/salzgitter-mayoral-election-winner-20260723163216446)
- **Oldenburg Mayoral Election Winner**: Jascha Rohr, 66%; settles Sunday, 13 September 2026 (polymarket). [Market](https://polymarket.com/event/oldenburg-mayoral-election-winner-20260723173826440)
- **Göttingen Mayoral Election Winner**: Onyeka Oshionwu, 47%; settles Sunday, 13 September 2026 (polymarket). [Market](https://polymarket.com/event/gottingen-mayoral-election-winner)
- **Hannover Region Presidential Election Winner**: Sinja Münzberg, 57%; settles Sunday, 13 September 2026 (polymarket). [Market](https://polymarket.com/event/hannover-region-presidential-election-winner-20260722233938481)