OK thank you for clarifying, that was very interesting. If the socialist party was renamed to social democrats almost 8 years after this person left office, then the way the Wikipedia article is written is literally rewriting history.

Just a point about the socialist label for the many Americans here. Willie Brandt worked hard on what was called social market economy, it is actually what gave rise to the successes of the German state in the past. While it is socialist, it is very far away from what the average American likes to call socialist. It was a hugely successful economic model, and the bit by bit destruction of that system is what gave rise to this dysfunctional rump state, which is the current Germany.