This is much ado about nothing. Mowers didn't break the law, he voted in two different primary elections after he had re-established residency in his native state for 30 days. The Dems and the mainstream media are drumming up controversy because they're afraid Mowers would shake things up in DC.
The hypocrisy of today's GOP is too much to bear. Despite the rhetoric of "Stop the Steal", and the party's focus on election fraud, its own members have repeatedly faced accusations of fraudulent voting. Meanwhile, Black voters are the only ones who ever seem to get charged with violations of election law.
The election system itself is flawed. Democrats and Republicans are unlikely to ever reach a consensus over how elections are conducted - public distrust in the system allows for draconian measures to combat it and, as a result, enables voter suppression.
Voter fraud is extremely rare in the United States. Most alleged fraud, such as that of Mowers and Meadows, is actually down to mistakes made by voters or during the administration process.