Stack Overflow requires at least 3000 rep for a user to nominate himself/herself to a moderator election. On the rest of the Stack Exchange network, only 300 rep is required. While it is true that the bar needs to be set higher for SO because SO has far more users, 300 is still too low for the rest of the network. As a result, we are seeing completely unqualified users nominating themselves for an election.
It would be a good idea to raise the reputation required for nomination to something like 1500 for Super User and Server Fault and 750 for non-Trilogy sites. In addition, a nominee should be required to have at least 10 posts on Meta for at least +25 and have at least 50 helpful flags (on Trilogy sites; 25 on the rest of the network). For sites that don't have enough users with sufficient rep, moderators should be appointed.