Will corruption and fraud, which has been an enduring characteristic of elections since Ukraine's independence in 1991, dictate their outcome?
Arseny Yatseniuk endorses ally and parliamentary speaker Volodymyr Groysman for the post.
Ukrainian intelligence services claimed 30,000 militants in eastern Ukraine received conscription summons to join the Russian armed forces
Alexander Zaharchenko won Sunday's election in the separatist-held city of Donetsk, while President Poroshenko accuses separatists of violating Minsk agreement
The Star Wars villain is campaigning for a seat in the Ukrainian parliament... and he's made some viral videos to back him up
A security official warned that separatists would try and 'discredit' Kiev ahead of elections on Sunday amid uncertainty over how the vote will be conducted