Kabul (CNN) The assassination by the Taliban of a notorious police chief in an important Afghanistan province this week could not have come at a more pivotal moment. On Saturday, parliamentary elections are taking place across the country in a vote that had already been delayed for three years because of security concerns.

Polls opened in much of Afghanistan at 7 a.m. local time (10:30 p.m. Friday ET) and will close at 4 p.m. local time (7:30 a.m. Saturday ET).

Thousands of people have not yet been able to vote, however, because of technical issues plaguing polling stations across the country, according to local candidates and officials.

Much rests on the vote: Hundreds of women and young people are among candidates standing for election, riding a wave of hope that the notoriously corrupt and inefficient political system in Afghanistan can be overhauled.

Afghan men line up to cast their vote at a polling center in Mazar-i-Sharif on Saturday.

But the killing of Gen. Abdul Raziq Achakzai , in an attack that the top US general in Afghanistan survived, has left many uneasy about what voting day may bring. Such is the concern, that authorities have delayed the vote for a week in the southern province of Kandahar, where Thursday's attack took place.

In the hours following Raziq's death, the Taliban, who claimed responsibility for the attack, issued another statement warning Afghans not to participate in what they called "an American project from start to finish."

The Taliban message said the group intended to close all "major and minor roads" throughout the country and urged Afghans to stay indoors. "We do not want to harm any common Afghan and therefore ask the public and especially city dwellers to refrain from participating or casting votes during elections," it said.

The Taliban had already vowed in a previous statement to target anything to do with the election, which they see as a sham. That statement was followed by warnings sent to students, teachers and religious leaders via messages delivered to the press.

The decision to delay the vote in Kandahar was taken Friday following a security meeting and a proposal from Afghanistan's Independent Election Commission, Shah Hussain Murtazawi, President Ashraf Ghani's deputy spokesman, wrote on his Facebook page.

Parliamentary candidate Idrees Stanikzai, originally from Kandahar, but running in Kabul, said the attack on Raziq would likely affect turnout in Saturday's polls. "It had a chilling effect on people all over the country," he said.

The 28-year-old said he expected people to turn out, but not in as large numbers as had been previously thought.

The impact was visible online as Afghans in the country and the diaspora flooded social media with tributes, poems, pictures and videos of Raziq. Some lionized him on Twitter as a hero, a "true patriot" and "a pillar of stability" for his ability to secure the city of Kandahar and keep the strategically significant province relatively stable despite Taliban gains elsewhere.

Civilians and military personnel stand beside the grave of Gen. Abdul Raziq, Kandahar police chief, during his burial in Kandahar on Friday.

After casting his vote Saturday, Afghan President Ashraf Ghani thanked law enforcement, election officials and citizens who made the election possible "despite the risks involved."

"Today we proved together that we uphold democracy. With casting our ballots without fear we honor the sacrifices of the fallen," he tweeted.

I just voted. And I thank the ANDSF, the IEC staff, and the great people of #Afghanistan who made it possible to vote despite the risks involved. Today we proved together that we uphold democracy. With casting our ballots without fear we honor the sacrifices of the fallen. pic.twitter.com/wrUCEa0MCR — Ashraf Ghani (@ashrafghani) October 20, 2018

Technical issues plague vote

Long lines formed outside many polling stations across the country as glitches prevented them opening on time.

Shaima Alam Soroush, a deputy spokeswoman for the Afghanistan Independent Elections Commission (IEC), told reporters in Kabul that due to technical issues there had been delays in the opening of some of the voting sites and centers. Efforts were being made to resolve the problem, she said.

Israr Karimzai, a campaign manager, told CNN that he had "20 reports of different centers across the country where people are being denied their right to vote" because "no ballot papers or no biometric devices or IEC staff have shown up" at the polling stations.

Mariam Solaimankhil, a Kuchi candidate in Kabul, told CNN she had been waiting for over an hour to vote herself. "This is a failed process," she said.

Stanikzai, also in Kabul, told CNN that voters were complaining about still waiting for their polling station to open more than two hours after their arrival, and that they would be waiting till noon before giving up and leaving.

Afghan women wait in line to vote at a polling center in Herat province on Saturday.

The head of provincial council in Maidan Wardak province, Sharifullah Hotak, told local Afghan TV station Shamsad that the biometric system in voting centers was not working in the whole of the province.

And in Herat, hundreds of people were standing in line as polling stations there also experienced technical issues.

Afghan Interior Ministry spokesman Najib Danesh earlier said that more than 20,000 polling stations were open across the country, with the exception of Kandahar and Ghazni provinces, where voting will take place at a later date.

Some 70,000 members of the Afghan forces have been deployed to ensure the security of the elections, he said.

Candidate: 'We must carry on'

The risks have not deterred more than 2,500 candidates nationwide, including more than 400 women, running for 250 seats in the Wolesi Jirga, the lower house of the Afghan parliament.

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Among those women is Maryam Samaa, a former journalist and news presenter on the nation's largest private broadcaster, TOLO TV, who is running for one of Kabul's 33 parliamentary seats.

When Samaa enters a room where potential observers for her parliamentary campaign -- all young men in their early to mid-20s -- are gathered, everyone stands to greet her. After a quick exchange of pleasantries, the 26-year-old commands the room.

That scene, of a lone young woman directly addressing a group of young men not far in age from her, is an embodiment of the exact kind of change Samaa, and hundreds of other young Afghans who are running, want to bring to the Afghan legislature.

As for the dangers, Samaa said she relayed a simple message to the people she spoke to during campaigning: "Our presence is our defiance, we must carry on. How long can we live under the shadow of fear and corruption?"

Afghan parliamentary election candidate Maryam Samaa, 26, checks her election campaign posters in Kabul on September 26.

A Helmand candidate for parliament, Abdul Jabar Qahraman, was killed with three others Wednesday by a bomb in his campaign office.

And as a former TOLO reporter, Samaa faces additional danger. According to the Afghanistan Journalist Safety Committee, the first six months of 2018 saw 89 cases of violence and intimidation against journalists, 11 of them fatal.

The scene after a blast Wednesday targeting parliamentary candidate Abdul Jabar Qaharman, in Helmand province's capital, Lashkargah city.

Women, young people step up as candidates

Samaa is part of a surge in young people who came of age in the post-Communist, post-Taliban era who have nominated themselves. And she is among a group of well-known journalists who have decided to forgo journalism for politics.

Like many other young candidates, Samaa said she decided to run because there are few "actual representatives of the people" in the current parliament. Rather than the house of the people, Sama said, the parliament has become a home for several competing "mafia networks."

A survey conducted earlier this year by the Afghan Institute for Strategic Studies, an independent research institute based in Kabul, found that only 9.6% of respondents were satisfied with the work of the current parliament.

Afghan employees of the Independent Election Commission carry ballot boxes at a warehouse in Herat province on Wednesday.

Throughout the 19-day campaign period, Samaa said, she met thousands of people, and they all said the same thing to her: "Don't forget us."

She recalls one family in West Kabul who put it very simply: "You came here today to our house and on our streets, but don't forget us tomorrow. If we don't see you again after this, then we will know you are like the people you want to replace."

When she heard those words, Samaa thought back to her childhood in the western province of Herat, where she started working with local civil society and activist groups at age 12.

"It's a responsibility every human being must take on," she said. "Everyone has to question the society around them, why is there so much inequity, and what is my role in reforming that society?"

Kabul commuters drive past posters of candidates Monday during the legislative election campaign.

Voting in these elections can also prove daunting for reasons other than security.

In the province of Kabul there are 804 candidates, including 119 women, vying for 33 seats -- resulting in newspaper-style ballot sheets that run more than a dozen pages long.

In a bid to simplify the process, candidates have made sure to list their ballot page and candidate number on all of their advertisements.

As in previous years, the election commission has also assigned graphical icons next to each candidate for voters who lack literacy. In a nation where only 31% of the population is literate, such efforts can help ensure as many people as possible turn out.

There are more than 400 women running for parliamentary seats across Afghanistan in this election.

Samaa: 'We have to make the change'

Although 20% of the 250 total seats in the parliament are reserved for women -- a quota that has far been exceeded by the 69 female members in the current parliament -- running as a woman in Afghanistan presents its own challenges.

"Traditionally, women do not venture out [of the house] and most men can't accept women in decision-making roles," said Samaa of her initial trepidations of running as a female candidate.

But, she said, campaigning showed her a different image of men's attitudes toward women in politics. "I was never rejected, no one said: 'You are a woman' and dismissed me," she said.

Maryam Samaa spent four years as a journalist and news presenter before choosing to run for parliament in Kabul.

The upcoming election has also been subject to claims of fraud. In September, a coalition of former lawmakers and other leaders said they had found evidence of thousands of fraudulent national identification cards and voter registration stickers.

Samaa said many people she spoke to told her of candidates illegally offering thousands of Afghanis -- as much as $60 -- for votes. In a nation where 54% of people live below the poverty line, those sums could represent major windfalls for some.

There have also been reports of candidates offering anywhere between $100 and $200 for election observers to work on their behalf on election day.

Despite the numerous challenges in her way, Samaa has vowed to carry on, and she hopes other young people will do the same.

"We, the youth, are the majority of this country," she said. "We have to make the change, because no one else will."