KABUL, Afghanistan (CNN) -- Under the menacing threat of violence from the Taliban, Afghans headed to the polls on Thursday in the war-ravaged nation's second-ever national election.
Burqa-clad women display ID cards as they queue to vote in Kandahar on Thursday.
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In parts of the capital Kabul, where recent calm was shattered by a series of bloody attacks leading up to election day, the streets were eerily empty early in the day, save extra security checkpoints. At midday, NATO's International Security Assistance Force reported "Kabul is calm."
The Taliban has vowed to disrupt the voting, and the risk may have been too high for some Afghans to venture out to vote.
The government ordered a ban on media coverage of incidents of violence in an effort to "ensure the wide participation of the Afghan people."
Thousands of NATO and Afghan soldiers provided security at the polls and more than 30 observer groups -- domestic and international -- were on hand to monitor the voting.
Watch an election monitor in Kabul discuss what's being examined »But in other parts of
Afghanistan that have been largely spared the daily drumbeat of car bombs, assassinations and whizzing rockets, voters lined up to cast their ballots.
Pajhwok, an independent Afghan news agency, reported brisk turnout in western Herat province, which borders Iran.
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Watch what ranks high among Afghan concerns »Organizers from Afghanistan's Independent Election Commission said all 412 polling stations across Bamiyan will be open, whereas in neighboring Daikundi province to the south, 11 polling centers were closed because of security concerns. The southern provinces form the heartland of Taliban territory.
A few other polling stations in eastern Kunar and Nuristan provinces that did not open and others, including 100 in Ghor that opened without a security presence, Pajhwok reported.
The Taliban ruled Afghanistan from 1996 until the 2001 U.S.-led invasion and in recent months has staged an increasingly bloody insurgency. Afghanistan observers and experts said a high turnout would help marginalize the radical Islamist group.
"We're at a moment of truth," said Mark Schneider, senior vice president of the International Crisis Group, an independent advisory and analysis organization.
Incumbent President Hamid Karzai, dressed in his traditional purple and green striped robe, cast his vote shortly after the polls opened Thursday and had his finger stamped with indelible ink, a measure to thwart fraud.
"It's the second presidential and parliamentary elections in Afghanistan and I'm sure this will be for peace, for progress and for the well-being of the Afghan people," he said afterward. "And I request the Afghan people to come out and vote so that through their vote, Afghanistan can be a more secure, more peaceful and a better country."
Karzai's name appears on the ballot with 40 other candidates for president. His top rival is his former finance minister Abdullah Abdullah, who once served as a confidante of Ahmed Shah Massoud, the charismatic leader of the anti-Taliban Northern Alliance killed by al Qaeda. The other candidate who gathered steam in the campaign is former Finance Minister Ashraf Ghani, a Western-educated man who served as a World Bank analyst.
Who are the candidates? How does the voting work? Read here »Karzai was named interim leader after the fall of the Taliban regime and won the 2004 election by a significant margin. His popularity, however, has waned in recent months as Afghanistan has been crippled by corruption and increasing bloodshed.
Both Abdullah and Ghani hailed anti-corruption measures and government transparency as centerpieces of their campaign platforms.
More than 3,000 candidates also are on the ballot vying for 420 provincial seats.
Women's votes were seen as crucial. Under Taliban rule, women were denied equal rights and hurtled backward in time. In some areas, however, women voters were greatly outnumbered by men.
Habiba Surobi, the female governor of Bamiyan, said one problem is that women who live in remote areas are still not aware of their rights.
"This is something to be concerned about," she said, adding that it was the responsibility of Afghanistan's women leaders to ensure better awareness and education.
International donors are helping pay for Afghanistan's $223 million electoral undertaking. Richard Holbrooke, the top U.S. envoy in the region, acknowledged earlier this week that staging an election in the midst of war was tough, but expressed optimism that Thursday's vote would showcase Afghanistan's fledgling democracy.
Watch preparations on election eve »About 15 million Afghans are registered to vote. Earlier, officials had estimated that number as 17 million.
