I think no company has tried to use Blockchain technology in their vote counting machines. It woukd be a nice project however, imagine that it will be used only if there are elections and elections dont happen every year or every other year so I guess they would rather stick to what they have right now.
Definitely not. But the issue in the elections of fake accounts is generated a lot with the information provided by ico houses. blockchan has not yet found an election, but using blockchan to manipulate elections will be available. because they bought user information and mail from ico projects