How do you know 'google takes election stuff seriously'? Causation!=effect. TBH I'm surprised the OP even asked the question 'why did an algorithm remove my stuff?'. No google employee is going to tell you (even if they knew, which is quite doubtful given the complexities of machine learning). If you sign up for a service which is machine-managed, you are subject to the whims of the machine. Occams razor suggests it is unlikely there is a conspiracy, or malice at play. The machine is just doing its job for its masters, possibly badly, possibly not, but the general populace will never know one way or the other.