Pistorius is much more popular than Scholz and indeed any other candidate (source):
FT (2024-11-21):
“To put it plainly, we have two possible candidates — one is the most popular politician in Germany, and the other is the least popular politician,” Maximilian Mumm, SPD mayor of the west German town of Maifeld, told the Financial Times. “That basically says it all.” ...
Mumm said he would not put up campaign posters with Scholz’s face if he is named as the party’s official candidate.
“He is not a leader,” Mumm told the FT. “That doesn’t mean he doesn’t have other qualities — he’s intelligent, he has talents. But he’s not the kind of person who can explain to voters what direction he wants to take the country.”
DW (2024-11-19):
"Many party colleagues view Scholz very critically and would prefer Pistorius," said another regional SPD chair in the state of Lower Saxony. "We would welcome it if Scholz were to reflect and take the appropriate steps."
But on 2024-11-21, Pistorius bowed out (via Instagram video), leaving Scholz the SPD's leading candidate and the SPD heading for a disastrous defeat.
So, why is the SPD going with Scholz instead of Pistorius? (How was this decision arrived at? What political, cultural, institutional, etc. factors might explain this decision?)