Actually, there were a few suggestions along that line in 2016. They were quickly and clearly debunked. Nothing at all like the persistent and widespread conspiracy theory so popular among Republicans. It's not enough that there are suggestions. It's who those suggestions are coming from and the evidence to support it. As has been noted, Giuliani and company even confessed that they didn't have the evidence to take to court. Of course, that wasn't what they claimed publicly.