They are trying to block/delay certification
https://www.cnn.com/2020/11/13/politics/trump-michigan-election/index.html
So, all that appears needed is a sympathetic judge pulling this close to the certification deadline and mayhem ensues. It is hard to see how many of these lawsuits may be out there as they are not directly tied to Don Trump's campaign.
A Michigan state judge has rejected an attempt by two poll challengers to block the certification of a Joe Biden win in Detroit, which helped carry his victory in the state.
Attorney David Fink, representing Detroit, said at a hearing Wednesday that blocking the finalization of Michigan's votes would either knock the state out of the Electoral College, kicking the selection of the president to the US House of Representatives, or would allow the Republican-held state legislature to try to seat its own slate of electors.
So, all that appears needed is a sympathetic judge pulling this close to the certification deadline and mayhem ensues. It is hard to see how many of these lawsuits may be out there as they are not directly tied to Don Trump's campaign.