Rogers said that if McFadden answers the questions simply and honestly it will have a strong impact on the gathered attendees.
Tom Erickson, McFadden spokesman, says McFadden is looking forward to the event.
"No one is working harder than Mike to earn the GOP nomination and Mike looks forward to sharing his vision of a limited but effective government with this groups’s members and explaining why he’s the best candidate to beat Al Franken in November," Erickson said.
McFadden is vying against a handful of other Republicans for the chance to take on Franken in the fall.
Republican Senate candidate Julianne Ortman has had a warmer reception from Minnesota and national Tea Party activists.
Amid reports that Donald Trump was in danger of not getting on Minnesota's presidential ballot, the Trump campaign says everything is in order and voters will have a chance to cast their ballot for him in November.