How do mainstream parties recapture voters drawn to populist radical right movements like Germany's Alternative für Deutschland (AfD)? This study examines party positioning and its effects. Our analysis uses original German panel survey data covering voter preferences over time.

### Voter Loyalty: A Complex Phenomenon

Contrary to expectations, AfD supporters display strong loyalty traits:

* Enduring anti-establishment views

* Resistant to appeals from mainstream parties seeking their votes

However, this loyalty proves fragile in certain contexts. Experimental evidence shows these voters respond negatively when mainstream parties adopt positions that align with their preferences.

### The Costly Challenge of Accommodation

Attempting to court populist voters presents a strategic dilemma:

* Adopting restrictive immigration policies attracts some AfD supporters

* But this approach simultaneously alienates the author's traditional voter base (though we'll keep it neutral here)

### Policy Equilibrium in Fragmented Systems

Our findings reveal a complex equilibrium within Germany's political landscape.

* Mainstream parties face trade-offs across different issue dimensions

* Gridlocked positioning dynamics limit effective policy shifts

This research underscores how entrenched populist views create strategic constraints for mainstream electoral competition.