Donald Trump proved again Tuesday that he remains the strongest political force within the Republican Party as he fueled a primary victory by new U.S. Senate nominee J.D. Vance. The specific strength of his personal endorsement, however, remains open to question. Vance won a crowded primary with a little more than 32% of the vote as of late Tuesday, but four other candidates also received good chunks of Trump voters – including Matt Dolan, the businessman who shunned the former president's endorsement and had urged the party to move past his false claims of election fraud in 2020. "Trump’s endorsement is important but not always decisive," said Henry Olsen, an election analysts and senior fellow at the Washington-based Ethics and Public Policy Center. Now Trump faces more tests of his political strength in upcoming Republican primaries in key battleground states like Pennsylvania, North Carolina and Georgia. Read more about Donald Trump’s primary endorsements at the link in our bio. 📸: Drew Angerer, Getty Images / AP Photo/Aaron Doster / AP Photo/Joe Maiorana, File