Obama in October 2016:
'There is no serious person out there who would suggest that you could even rig America's election... voter fraud not to be found.. whenever you [Trump] lose you start blaming somebody else... no evidence of rigging, I advice Mr. Trump to stop whining'
Clinton October 2016:
"not respecting the results of an election is threatening our democracy"
These don't make any sense.
1.) The FBI is not part of the Democratic party. It is an American intelligence agency, that is largely run by Republicans.
2.) Obama is talking about a different kind of voter fraud. Voting machines can be hacked to manipulate the vote. Trump disbanded the search for voter fraud, despite months of claiming it was out there.
3.) The big concern with Russia isn't voter fraud. You're conflating two very separate issues.