"My opponent, Tammy Duckworth, has always been the preferred pick of Democrat Party insiders from [Rod] Blagojevich to [Rahm] Emmanuel," Walsh continued in the statement. "Despite that, I hope she will join me in skipping the conventions to tour the district to discuss the real issues that matter to real people.

"The conventions are nothing more than an excuse to mingle with insiders and party with the elite. This district does not want just another insider to represent them; they want an independent who will fight for real solutions to the issues." 

Duckworth recently announced she outraised Walsh in the second fundraising quarter. Duckworth took in $885,540, while Walsh said he raised $318,121, with roughly $750,000 cash on hand, according to local reports.