A city man is anxious to have Mayor Lynn Peterson face some challengers this fall. David Polhill is running an ad to help find and support a suitable candidate to run against Peterson in the October municipal election. He says right now there have been special interests groups that have contacted him about getting together for a meeting on the issue. He's hoping this will lead to financial backing for a candidate and people willing to help with the campaign. Polhill says he began his crusade after a personal incident at city hall.