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Political elites play an important role in determining who wins primaries, yet comparatively little is known about which voices in party networks matter when different intra-party signals are sent. We examine this question using an original dataset of Republican Senate and gubernatorial primaries in 2022, an election cycle with substantial intra-party conflict in primary elections. We demonstrate that Fox News appearances (media), Trump’s endorsements (MAGA), campaign fundraising (money), and Twitter engagement (mentions) were all positively associated with vote share. We then assess the state of primary fields prior to Trump’s endorsements, showing that endorsed candidates were outperforming their competitors prior to his involvement. Finally, we consider the state of primary fields after Trump endorsed, demonstrating that his support was associated with a thirteen percentage point increase in both fundraising share and polling which lasted through to the primary. These findings provide clarity on the relative weight of different signals in contested party nominations.
Blum et al. (Fri,) studied this question.