NEW YORK — A group of election lawyers and data experts has asked Hillary Clinton’s campaign to call for a recount of the vote totals in three battleground states – Wisconsin, Michigan and Pennsylvania – to ensure that a cyberattack was not committed to manipulate the totals.

There is no evidence that the results were hacked or that electronic voting machines were compromised. The Clinton campaign on Wednesday did not respond to a request for comment as to whether it would petition for a recount before the three states’ fast-approaching deadlines to ask for one.

President-elect Trump won Wisconsin and Pennsylvania by razor-thin margins and has a small lead in Michigan. All three had been reliably Democratic in recent presidential elections.

The group, led by voting-rights attorney John Bonifaz and J. Alex Halderman, the director of the University of Michigan Center for Computer Security and Society, contacted the Clinton campaign this week. That call raised the possibility Clinton may have received fewer votes than expected in some counties that rely on electronic voting machines.

But Halderman, in a Medium article, stressed the group has no evidence of a cyberattack. He urged that a recount be ordered just to eliminate the possibility.