LONDON-Voters punished the opposition Labour Party in Scotland as the results rolled in Friday for local and regional elections - races that underscored divisions in the public mood across the United Kingdom.
The elections demonstrated the complexity of British politics in the final weeks before Britons vote in a critical June 23 referendum on whether the country should remain in the European Union. The strength of opposition leader Jeremy Corbyn is particularly under scrutiny, as the races were the first nationwide poll since he took over as leader last year.
Conservative candidate Zac Goldsmith, a wealthy environmentalist, has described Khan as "dangerous" and accused his opponent of giving "platforms, oxygen and even cover" to Islamic extremists -a charge repeated by Prime Minister David Cameron and other senior Conservatives.
With about half the vote counted, Khan was leading. Final results are not expected until Friday evening.
A victory for Khan would offer a bit of gloss to what is shaping up as a grim day for Labour, which was pushed to third place in Scotland - where it was once dominant. The Conservative Party has become the main opposition - an unprecedented situation in a region that had shunned the party for decades because of the fury that resulted from economic policies under former Prime Minister Margaret Thatcher, which cost thousands of jobs in mining and heavy industries.
The pro-independence Scottish National Party secured a third term in government in the county's parliamentary elections, but failed to secure a majority by only two seats.
SNP Party Leader Nicola Sturgeon told jubilant supporters that the voters showed trust in the party.
"The SNP has won a third consecutive Scottish Parliament election," she said. "That has never been done before in the history of the Scottish Parliament. We have tonight made history."
While Labour's losses in Scotland were humiliating, the party fared less badly overall than many had predicted. It held on to control of major cities in England including Birmingham, Newcastle-upon-Tyne and Sunderland.
"We hung on and we grew support in a lot of places," he said.
The results will do little to quell restive Labour lawmakers who think Corbyn's left-wing policies are a turn-off for many voters.
"The Labour results in England are a mixed bag, but nowhere near as bad as some had been predicting," said Matthew Ashton, a politics expert at Nottingham Trent University. He said that critics who want to "use the results as leverage to call for a leadership challenge are likely to be disappointed."
"Their argument that Labour should be doing better, though, especially considering Conservative divisions over Europe in recent weeks, will continue to resonate," he said.
In Wales, which has traditionally been pro-Europe, the anti-immigrant UK Independence Party gained seven seats in the Welsh Assembly, winning about 13 percent of the vote.
Andrew Blick, a constitutional expert at King's College London, said the results underscore how difficult the referendum campaign will be - as attitudes nationally seem to be so complex.
"We don't know where the mood is," he said. "There are lots of different moods. What message do you push ahead with in the campaign when you have so many different opinions?"