ZELENODOLSK — Russians voted in a presidential election on Sunday set to give Vladimir Putin a runaway victory, the only possible blemish for the Kremlin being if large numbers of voters do not bother taking part because the result is so predictable.

Opinion polls give Mr. Putin, the incumbent, support of around 70%, or nearly 10 times the backing of his nearest challenger. Another term will take him to nearly a quarter century in power — a longevity among Kremlin leaders second only to Soviet dictator Josef Stalin.

Mr. Putin’s opponents alleged officials were trying to inflate the turnout.

Many voters credit Mr. Putin, a 65-year-old former KGB spy, with standing up for Russia’s interests in a hostile outside world, even though the cost is confrontation with the West.

A row with Britain over allegations the Kremlin used a nerve toxin to poison a Russian double agent in a sleepy English town — denied by Moscow — has not dented his standing.

The majority of voters see no viable alternative to Mr. Putin: he has total dominance of the political scene and the state-run television, where most people get their news, gives lavish coverage of Mr. Putin and little airtime to his rivals.

Galina Zhukova, a pensioner, came to polling station number 1512 in Zelenodolsk, about 800 km (500 miles) east of Moscow, with her husband, Alexei. They arrived soon after the doors opened.

“We voted for Putin. Things are all right for us,” said Alexei. “And there’s no one else to vote for,” said Galina.

A day of voting across Russia’s 11 time zones began at 2000 GMT on Saturday on Russia’s eastern edge, in the Pacific coast city of Petropavlovsk-Kamchatsky.

There, voters were handed small plastic flags with the slogan: “I love Kamchatka. We are the first.”

Voting will run until polls close at the westernmost point of Russia, the Kaliningrad region on the Baltic Sea, at 1800 GMT on Sunday.

SHOO-IN CONTEST
A March 9 survey by state-run pollster VTsIOM gave Mr. Putin, who was first elected president in 2000, support of 69%. His nearest rival Pavel Grudinin, the Communist Party’s candidate, is on just 7%.

The first politician in years to challenge the Kremlin’s grip on power, Alexei Navalny, is barred from the race because of a corruption conviction he says was fabricated by the Kremlin.

He is calling for a boycott of the election, saying it is an undemocratic farce, and deploying supporters to collect evidence of anyone rigging the ballot to inflate turnout and support for Mr. Putin. The Kremlin and election officials say any fraud will be stamped out.

In an address to the nation broadcast on national television on Friday, Mr. Putin said voters held the fate of the country in their hands and urged them to vote.

A low turnout would diminish Mr. Putin’s authority in his next term, which, under the constitution, has to be his last.

“There is no intrigue. I do not see any point for me in going to the election,” said Alexei Khvorostov, a resident of Krasnodar, in southern Russia.

Yevgeny Roizman, a Kremlin opponent who is mayor of the industrial city of Yekaterinburg, said officials were using bribes and inducements to persuade people to vote.

“They’re herding the whole country to the polling stations,” Mr. Roizman, a rare example of an elected official opposed to the Kremlin, said in a video blog. “It’s degrading… We’re not sheep.”

In the Khabarovsk region, on Russia’s Pacific coast, officials delivered supplies of eggs, tinned peas and frozen pike to polling stations. It will be sold to voters at a discount of between 10% and 30% compared to prices in local shops.

“By doing this we hope to attract voters to the polling stations and we think we can increase turnout,” said Nikolai Kretsu, chairman of the consumer market committee in the regional administration.

“The second objective is to strengthen allegiance towards the authorities.” — Reuters

MOSCOW — Prime Minister Theresa May said the UK may take further action against Russia over the nerve-agent poisoning of a former spy and his daughter after Moscow ordered 23 British diplomats to leave the country in a tit-for-tat retaliation.

“We anticipated a response of this kind and we will consider our next steps in the coming days, alongside our allies and partners,” Ms. May said at a Conservative Party forum in London on Saturday. Russia also ordered the British consulate in St. Petersburg to close and told the British Council to end its work in the country.

The Foreign Ministry in Moscow summoned UK Ambassador Laurie Bristow on Saturday to tell him of the retaliation for Ms. May’s expulsion of 23 Russian diplomats from London. The measures were in response to “the provocative actions of the British side and the unsubstantiated accusations” against Russia, the ministry said. The confrontation escalated after Ms. May accused Moscow on Wednesday of an “unlawful use of force” involving a weapons-grade nerve agent and ordered out the largest number of Russian diplomats from London in 30 years. She also broke off all high-level contacts over the chemical attack that poisoned former Kremlin double-agent Sergei Skripal and his daughter Yulia in the city of Salisbury on March 4. The pair remain in critical condition.

‘APPALLING ATTACK’
The first use of a nerve agent on European soil since World War II is a direct challenge to the Western alliance, days before elections are almost certain to give Vladimir Putin a fourth term as Russia’s president. Tensions heightened further when UK Foreign Secretary Boris Johnson said Friday that it was “overwhelmingly likely” Mr. Putin personally ordered the operation, a comment described as “unpardonable diplomatic misconduct” by the Kremlin.

Mr. Johnson added to his Putin criticism on Saturday, writing in the Washington Post that the nerve-agent incident is “part of a pattern of reckless behavior” by the leader, citing Russia’s annexation of Crimea, cyberattacks in Ukraine, the hacking of Germany’s parliament and Russia’s interference in foreign elections.

“This crisis has arisen as a result of an appalling attack” in the UK involving “a chemical weapon developed in Russia and not declared by Russia at the Organisation for the Prohibition of Chemical Weapons, as Russia was and is obliged to do,” Mr. Bristow told reporters in televised comments as he left the ministry.

Russia gave the British diplomats one week to leave. “If further actions of an unfriendly nature are taken against Russia, the Russian side reserves the right to take other retaliatory measures,” the ministry said.

BACKING MAY
The UK National Security Council will meet early next week to “consider next steps,” the Foreign and Commonwealth Office in London said in a statement on Saturday. “We continue to believe it is not in our national interest to break off all dialogue between our countries but the onus remains on the Russian state to account for their actions.”

US President Donald J. Trump, German Chancellor Angela Merkel and French President Emmanuel Macron backed the UK in a joint statement with Ms. May on Thursday and said there’s “no plausible alternative explanation” to Russian responsibility.

Russia denies involvement and warned for days that it would reply to the UK’s expulsion of 40% of its diplomats in London. Foreign Minister Sergei Lavrov has denounced the British accusations as “absolutely rude, unsubstantiated and baseless.”

Russia’s response is “moderate, expected and appropriate,” said Oleg Morozov, a former senior Kremlin official who now sits on the foreign affairs committee of the upper house of parliament. “It’s impossible not to respond in this situation. Britain is acting too defiantly.”

COUNCIL CLOSING
The order to close the British Council ends nearly 60 years of its work in Russia as the UK’s international organization for culture and education. It opened offices in Moscow under a 1959 agreement with the Soviet Union and expanded to 15 Russian cities after the 1991 collapse of the Communist state.

Its presence gradually reduced amid mounting political confrontation between the UK and Russia, which also disputed the legal basis for the council’s presence in the country. In 2008, Russia ordered the council to close all its offices except the Moscow headquarters as part of retaliation for the UK’s expulsion of diplomats over the radioactive poisoning of former security-service officer Alexander Litvinenko in 2006. A UK public inquiry concluded in 2016 that Putin “probably” approved the killing.

Russia’s attacking the wrong target with its “misguided” decision to close the council, Clementine Cecil, executive director of the Pushkin House center in London, which promotes Russian culture, wrote on Facebook. “Relations have been poor for a long time, and the cultural field is the only arena where we can have positive, two-way reciprocal communication.”

Relations strained further on Friday when London’s Metropolitan Police said that it’s treating as murder the death of Nikolai Glushkov, a close associate of Putin opponent Boris Berezovsky — a one-time billionaire who was himself found hanged in 2013 in his house outside London.

Mr. Glushkov, 68, was found dead at his home in the southwest of the UK capital on March 12. An autopsy showed he died from “compression to the neck,” the police said in a statement, adding that there was no evidence he had been poisoned or to link his death to the attack on the Skripals. — Bloomberg