Conservatives are set to gather in Phoenix, Arizona, on Thursday for Turning Point USA’s annual AmericaFest conference, as the organization navigates tense battles about its future after the death of co-founder Charlie Kirk.

Speakers at the event are a who’s who of the conservative and Make America Great Again movements, including key members of President Donald Trump’s administration. Vice President JD Vance, who is seeking to position himself as the next leader of the right, will be the keynote speaker on Sunday.