POLL: Best Senate cameo on Parks & Rec?

Which Senate cameo on Parks & Rec was the best? Check 'em out then vote below! 

http://niveaserrao.tumblr.com/post/110692932875/actual-role-model

Sen. John McCain 

Get your tickets now! (You'll save $2). #GovBuds pic.twitter.com/Wk9agKn1jM

— Parks and Recreation (@parksandrecnbc) February 11, 2015

Sens. Cory Booker & Orrin Hatch's folk band

Sen. Barbara Boxer & fmr. Sen. Olympia Snowe meet Leslie Knope at D.C. party