In the following weeks, elections in Nebraska, Pennsylvania and North Carolina will also serve as a referendum on Trump’s ability to shape the future of the GOP. Senate seat and several other contenders who spent months clamoring for the former president’s support. The first test comes on Tuesday when voters in Ohio choose between the Trump-backed JD Vance for an open U.S. begin weighing the candidates he elevated to pursue a vision of a Republican Party steeped in hardline populism, culture wars and denial of his loss in the 2020 campaign. NEW YORK (AP) - Donald Trump’s post-presidency enters a new phase this month as voters across the U.S.