Soaring living costs and foreign conflict frame a pivotal vote that will determine control of the House and Senate.
The former president visits Wichita with two weeks until polling day as rising farm costs put a traditionally safe Republican seat in play.
The Michigan Senate nominee says decisive margins at the ballot box are essential to make the midterm results unquestionable.
With more than $390m flowing into broadcast adverts, the party is deploying Donald Trump and JD Vance to defend a seat vital to its Senate majority.
The former president will appear alongside the progressive Senate nominee and Jocelyn Benson on the first day of in-person early voting.
The former president urged followers to call the Arkansas senator directly to demand an end to biannual clock changes.
The CLARITY Act, which promised federal regulatory rules for digital assets, fell short of the 60 votes needed to bypass a Senate blockade.
The Republican leader has not been seen in public since his hospitalisation in June, reviving debates about aging lawmakers.
