After a user votes, in History tab the editor is always the Admin.

[oanalavinia]

Steps to reproduce

1. Login as a different user than admin
2. Create a new poll
3. Add some Proposals (e.g. Proposal1,Proposal2,Proposal3)
4. Set Status to 'Active'
5. Click 'Save & View'
6. Click to vote a proposal (e.g. Proposal2)
7. Click 'Save'
8. Refresh the page
9. Observe 'History' tab

Expected result

The last version editor is the current user, with witch you have voted.

Actual result

The last version editor is the Admin.