During each election cycle, global monitors are part of the election-day landscape.
Russian Federation is yet to formally retaliate to Prime Minister Theresa May's expulsion of the diplomats.
Mr Navalny, whose group also monitored the vote, dismissed Mr Putin's challengers on the ballot as "puppets".
A Russian election monitoring group said Saturday it has registered an "alarming" rise in recent days in complaints that employers are forcing or pressuring workers to vote. He told a meeting of supporters afterwards that hard times were ahead, but that Russian Federation had a chance to make "a breakthrough".
Confrontation ultimately could work against Putin because it'll deprive Russian Federation of investment and know-how needed to lift the economy out of the doldrums, said Oksana Antonenko, visiting senior fellow at the London School of Economic and Political Science. None of the other contenders was a serious prospect.
Russia's Central Election Commission has pledged to investigate irregularities, and has suspended two officials amid allegations of voting fraud in the Moscow working-class district of Lyubertsy, according to the Russian news agency TASS.
She has announced plans to launch a new "Party of Changes" together with opposition politician Dmitry Gudkov and on Sunday arrived at Navalny's headquarters to invite him to "try to join forces" but was refused. She is the only candidate who has openly criticized Putin.
The Russian presidential election came amid escalating Cold War-like tensions, with accusations that Moscow was behind the nerve-agent poisoning this month of a former Russian double agent in Britain and that its internet trolls had waged an extensive campaign to undermine the 2016 USA presidential election.
Backed by state TV, the ruling party, and credited with an approval rating of around 80 per cent, his victory was never in doubt.
With ballots counted from 60 percent of the vast country's precincts, Putin won more than 75 percent of the vote, the Central Elections Commission said.
Putin's 76 percent accounts for more than 50 million votes.More news: Pres. Trump claims political bias in Russian Federation probe
Vladimir Putin attends a pre-election concert in Sevastopol, Mar 14, 2018.
Opinion polls give Putin, the incumbent, support of around 70 percent, or almost 10 times the backing of his nearest challenger.
Not every claim by opposition figures is correct.
But Navalny, who risks 30 days in jail for organising illegal protests, urged a boycott.
Other footage from polling booths in Chechnya showed a man calmly stuffing ballot boxes with papers as he greeted people. Medusa found a new automated registration system by election day "analyzes all applications...and green lights only the first one".
The eight presidential candidates were barred from campaigning Saturday, but the message to voters was clear from billboards celebrating Russian greatness - a big theme of Putin's leadership - and Kremlin-friendly media coverage.
Ksenia Sobchak attends an election campaign in Berdsk, Russia, January 15, 2018.
The updates of their medical conditions come as the Foreign Secretary Boris Johnson said it was "overwhelmingly likely" that Vladamir Putin directed the use of the nerve agent on Britain's streets.
"That's why the Kremlin seeks fresh faces each time".
"Sobchak works perfectly in her niche; she's controllable and honest at the same time".
"We don't care about this spectacle in which we already know the ending".
"My country is getting stronger - its always been strong - and we approve of the direction it's going in".