With some 98 per cent of the ballots counted, Aliyev had sealed a crushing majority at yesterday's vote in the ex-Soviet state notching up around 84.6 per cent, with main opposition challenger Jamil Hasanli far behind in second place with 5.5 per cent, the electoral commission said.
"The presidential election in Azerbaijan was a triumph for democracy," Aliyev said in a televised address to the nation early today morning.
But Hasanli's election campaign has alleged there were "massive" electoral violations across the resource-rich country and promised not to accept the result.
The 51-year-old Aliyev came to power in a disputed 2003 vote after the death of his powerful father Heydar, a former KGB officer and Communist-era boss who ruled the ex-Soviet nation of 9.5 million people for the preceding 10 years.
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He was re-elected in 2008 with 89 per cent of the vote in a poll called neither free nor fair by Western observers and pushed through a referendum a year later that allowed him to run this time round.
Some 72 per cent of Azerbaijan's roughly five million registered voters cast their ballots, the central electoral commission said.
'Massive violations across the country'
Main challenger Hasanli, however, has blasted the election, alleging a string of violations, including voters being bussed round to cast ballots at multiple polling stations, ballot-stuffing and observers being barred from monitoring the vote.
"Massive violations were carried out across the country," the Hasanli campaign said in a statement during the vote.
Fuelled by billions of petrodollars, living standards in the mainly Muslim nation have soared in the past decade, with Azerbaijan becoming an increasingly important energy supplier to Europe and an ally of NATO.
During voting at one polling station in Baku -- a city which has undergone a glitzy building boom in recent years -- voters had waited in silence to cast their ballots under an Azerbaijani flag.