Doctoring of results in the election forms very common in Tanzania since 1995-2015 but in 2020 no vote counting was done, at all just declaring highly falsified results.
The movement of military convoys towards Luo Nyanza is a red flag Raila Amolo Odinga has lost the election.
It seems security forces anticipate election related violence in Luo Nyanza, and they are advancing there to throttle it once and for all before it rears its ugly hydra.