Pedzisa mutsara unotevera: Panguva yesarudzo ya2002 yokuva gavhuna weWyoming, Karpan akatsigira Paul Hickey kuti azosarudzwa musarudzo yeDemocratic. Akatsigira Hillary Clinton panguva ye2008 Wyoming Democratic presidential caucuses uye akashanda semumiriri waClinton pamusangano webato
kokorodzano yenyika. Munguva 2010 Wyoming gubernatorial sarudzo, Karpan akashanda sezvo co-chigaro Leslie Peterson kuti gubernatorial mushandirapamwe pamwe Joe Evans. Akatsigira zvakare Clinton panguva ye2016 Democratic presidential primaries. Mugore rimwe chetero, Karpan akashanda sachigaro wenyika yeRyan Greene's House of Representatives mushandirapamwe.