The investigation that started before the elections were to look into Interference, there was nothing political about it, to me.
The investigations that started following the firing of Comey were for obstruction, again, are pretty clear that it was obvious and he may even have been found guilty if not for his "special privilege".
I am thinking, again its just my opinion, that I feel the move from Interference-Collusion was politically motivated. I am not saying it was only because of the "13 angry democrats" that it happened. I also don't believe that Democrats had no say in this. And this is what I think would have happened if Trump lost. They would have published report saying that Russians did interfere in the elections and the likes of Manafort, Stone and Papadopulous would not even been looked at, possibly.
The crux of it is that Trump is at the center of everything regards to this investigation. It will be hard to know whether all roads lead to Trump or whether the investigations were only held in those directions.By saying these you may feel, that I am buying into this bullshit of Trumps agenda. But I seriously am not.