Party conventions influence nominee selection by providing a platform for formal endorsement of presidential candidates and mobilizing party support. During these events, party leaders, delegates, and activists rally around a candidate, solidifying their political standing and honing campaign messaging. Conventions also serve as an opportunity for showcasing party values and priorities, building enthusiasm among supporters. The outcomes can significantly affect the momentum a candidate gains heading into the general election. Additionally, the media coverage surrounding conventions helps shape public perception and can swing undecided voters, making these events crucial in the electoral process.