Berdymukhammedov, who has control over all aspects of society, is expected to easily defeat eight other candidates who are widely seen as window dressing for the vote in the Central Asian country.
The tightly controlled state media gave little coverage to the other eight candidates’ election campaigns, occasionally showing brief clips of meetings with voters.
Berdymukhammedov, on the other hand, enjoyed blanket media coverage in frequent appearances in cities and towns across the sprawling, sparsely populated nation of 5.3 million.
In another appearance, Berdymukhammedov was seen giving big, bright green boxes that reportedly contained television sets to a group of shepherds who vowed to vote for him in return.
Two days before the vote, international watchdog Reporters Without Borders (RSF) said that "persecution" of the few remaining independent journalists has intensified in the past two years in Turkmenistan, which RSF ranks 178th out of 180 countries in its World Press Freedom Index.
While Berdymukhammedov has not been declared president for life, as his predecessor Saparmurat Niyazov was in 1999, Turkmenistan did amend its constitution last year to extend the presidential term from five to seven years and remove the 70-year age limit for candidates.
A dentist-turned-politician, Berdymukhammedov came to power after the death of the eccentric Niyazov, who was known for his extensive personality cult and brutal crackdowns on dissent.
Berdymukhammedov brought some mild reforms early in his presidency, such as reintroducing foreign languages to the school curriculum and reopening village hospitals closed down by Niyazov.
But critics say any hopes for a turn toward democratic ideals were quickly dashed, lamenting that the country still has no real opposition parties and that political dissenters are sent to prison or placed in psychiatric hospitals.
"Since he took power 10 years ago he has increased his personal control and... there are no competitors, there are no checks and balances built [into the system]," said Jozef Lang, a Central Asia analyst at the Centre for Eastern Studies in Warsaw. "The president controls both the elite and the society in a very tight way."
Observers say Berdymukhammedov has also begun building his own personality cult, styling himself as Arkadag (the Protector). A 21-meter marble and gold-leaf statue of Berdymukhammedov on horseback, holding a dove, was erected in the center of the capital, Ashgabat, in 2015.
"He [declared himself] 'the protector' of society, but what he really wants to protect is his grasp on power and access to the hydrocarbon wealth that provides him and his narrow circle with significant profits," the German Marshall Fund's Romanowski said.
But Berdymukhammedov’s third run for the presidency comes as the economy is struggling following a steep decline in global energy prices and a severe drop in exports.
Photographs from Ashgabat and other cities showed long lines at government-owned grocery shops ahead of New Year celebrations.
During the election campaign, the government ordered private traders in bazaars to lower food prices, according to merchants and consumers.
The Organization for Security and Cooperation in Europe (OSCE) sent a limited observation mission to review the country's election laws and their implementation -- the first time the OSCE has ever sent monitors to a presidential election in Turkmenistan.
But Lang said he expects the vote will do little to change the reality beneath a veneer of democracy.
"Turkmenistan is a highly authoritarian state, yet it does have a facade of democratic institutions, and one of them is elections," he said.