Challenges to another voter's registration must be filed with the county board of elections, which would then conduct a preliminary evidentiary hearing to determine whether grounds for the challenge are sufficient. The challenger bears the burden of proof in such challenges.

State judges in Michigan and North Carolina on Monday rejected the Republican National Committee’s (RNC) separate challenges to certain overseas ballots in the key swing states.

The RNC filed lawsuits in Michigan and North Carolina to challenge state policies that permit citizens living abroad to cast ballots in those states if their parents (or, in Michigan, their spouse) resided there before leaving the country, even if the voters themselves have never lived in those states, said the outlet.