Obama gave him Crimea, Biden the Donbas, and Harris ?????
Per Putin himself :
Speaking at the Eastern Economic Forum in the Russian far-eastern city of Vladivostok on Sept. 5, Putin said he would "lend" Harris his support (archived):
As for my preferences [in the U.S. election], it is not up to us to decide. After all, the American people will have to make their own choice. As I have already said, we favoured Mr Biden, the current President, but they took him out of the race. That said, he advised his supporters to support Ms Harris. So, we will act accordingly and lend her our support.
He later added that the Democratic nominee has "a very contagious" laugh, whereas "no other President has ever imposed so many restrictions and sanctions against Russia" as Trump.