AfD accuses Twitter of election interference

You're perhaps confusing Maximilian Krah's Twitter account, with the account of the European Conservative. The full "search ban" is for the latter, while the former is afflicted only by the "search suggestion ban". You can verify their claims yourself with https://shadowban.yuzurisa.com - I tried it, and got the same results as the article claims.

> From wikipedia "The Federal Office for the Protection of the Constitution classifies statements by [the politician] as nationalist, Islamophobic, xenophobic and anti-constitutional."

Ah, so it's election interference for a good cause. Never mind then.