Egyptians voted Saturday on constitutional amendments that would allow President Abdel-Fattah el-Sissi to stay in power until 2030 and broaden the military’s role — changes blasted by critics as another major step toward authoritarian rule.

The referendum came amid an unprecedented crackdown on dissent in recent years. El-Sissi’s government has arrested thousands of people, most of them Islamists but also prominent secular activists, and rolled back freedoms won in a 2011 pro-democracy uprising.

Polls opened at 9 a.m. (0700 GMT). Voting will stretch over a period of three days to allow maximum turnout.

A voter leaves a polling station guarded by soldiers after she casting her ballot on constitutional amendments during the first day of three-day voting in Cairo, Egypt, Saturday, April 20, 2019. (AP Photo/Amr Nabil)
A voter leaves a polling station guarded by soldiers after she casting her ballot on constitutional amendments during the first day of three-day voting in Cairo, Egypt, Saturday, April 20, 2019. (AP Photo/Amr Nabil)

Outside a polling center near the Giza Pyramids, around two dozen people, mostly elderly women, lined up waiting to cast their votes. Heavy police and army security was reported at polling stations throughout the capital city.

Haja Khadija, a 63-year-old housewife, said she came for the “security and stability” of the country. “We love el-Sissi. He did lots of things. He raised our pensions.”

Casting his ballot on Saturday, Prime Minister Mustafa Madbouly urged voters to turn out in high numbers. He said that voting will reflect “the atmosphere of stability and democracy that we are witnessing now.”

A voter dips her finger in ink during the first day of three-day voting on constitutional amendments in Cairo, Egypt, Saturday, April 20, 2019. (AP Photo/Amr Nabil)
A voter dips her finger in ink during the first day of three-day voting on constitutional amendments in Cairo, Egypt, Saturday, April 20, 2019. (AP Photo/Amr Nabil)

The state-run TV said el-Sissi had casted his vote in Cairo’s Heliopolis district, nearby the presidential palace.

Opposition voices have largely been shut out amid the rush to hold the referendum. Pro-government media have led a campaign for weeks calling a “Yes” vote a patriotic duty.

Since early April, the Egyptian capital has been awash with large posters and banners encouraging people to vote in favor of the changes. Most of the posters were apparently funded by pro-government parties, businessmen and lawmakers.

A voters carries her son as she casts her ballot on constitutional amendments during the first day of three-day voting at polling station in Cairo, Egypt, Saturday, April 20, 2019. (AP Photo/Amr Nabil)
A voters carries her son as she casts her ballot on constitutional amendments during the first day of three-day voting at polling station in Cairo, Egypt, Saturday, April 20, 2019. (AP Photo/Amr Nabil)

Parliament, packed with el-Sissi supporters, overwhelmingly approved the amendments on Tuesday, with only 22 no votes and one abstention from 554 lawmakers in attendance. The national electoral commission announced the following day that voting would begin on Saturday.

The proposed changes are seen by critics as another step toward authoritarianism. The referendum comes eight years after a pro-democracy uprising ended autocrat Hosni Mubarak’s three-decade rule, and nearly six years after el-Sissi led a popular military overthrow of the country’s first freely elected but divisive Islamist president, Mohammed Morsi.

Two international advocacy groups — Human Rights Watch and the International Commission of Jurists — on Saturday urged the Egyptian government to withdraw the amendments.

A voter casts her ballot on constitutional amendments during the first day of three-day voting at a polling station in Cairo, Egypt, Saturday, April 20, 2019. (AP Photo/Amr Nabil)
A voter casts her ballot on constitutional amendments during the first day of three-day voting at a polling station in Cairo, Egypt, Saturday, April 20, 2019. (AP Photo/Amr Nabil)

“Egypt’s autocracy is shifting into overdrive to re-establish the ‘President-for-Life’ model, beloved by dictators in the region and despised by their citizens,” said Michael Page, deputy Middle East and North Africa director at Human Rights Watch. “But it’s a model that recent experience in Egypt and neighboring countries has demonstrated is not built to last.”

The Civil Democratic Movement, a coalition of liberal and left-leaning parties, urged people to participate in the referendum by voting “No.”

The coalition said it used social media to spread its message, noting that it was banned from hanging banners in the streets to call on voters to reject the amendments.

A voter rides his bicycle past a poster supporting Egyptian President Abdel-Fattah el-Sissi near a polling station in Cairo, Egypt, Saturday, April 20, 2019. (AP Photo/Amr Nabil)
A voter rides his bicycle past a poster supporting Egyptian President Abdel-Fattah el-Sissi near a polling station in Cairo, Egypt, Saturday, April 20, 2019. (AP Photo/Amr Nabil)

The amendments extend a president’s term in office from four to six years and allow for a maximum of two terms. But they also include an article specific to el-Sissi that extends his current second four-year term to six years and allows him to run for another six-year term in 2024 — potentially extending his rule until 2030.

El-Sissi was elected president in 2014, and re-elected last year after all potentially serious challengers were either jailed or pressured to exit the race.

The amendments also allow the president to appoint top judges and bypass judiciary oversight in vetting draft legislation, while also granting military courts wider jurisdiction in trying civilians.

In the last three years, over 15,000 civilians, including children, have been referred to military prosecution in Egypt, according to Human Rights Watch.

The amendments also introduce one or more vice presidents, revive the senate and enshrine a 25% quota for women in parliament’s lower, legislative chamber. All three had been dropped from Egypt’s constitution after the 2011 revolution.