The night featured attacks against Muslim Dems and tributes to Charlie Kirk.
Former President Donald Trump has picked Ohio Sen. J.D. Vance as his running mate, placing a young, ideological ally alongside him on the Republican 2024 ticket.
The Illinois Republican Party has elected a new chair, after Don Tracy resigned last month, citing intra-party power struggles.
Monday's move by the committee comes as abortion remains a key issue for voters in an election year, in what is expected to be a close race between Trump and President Joe Biden.
The campaign has already begun solidifying preparations for Trump's running mate.
In a resignation letter to the party's state central committee Wednesday, Don Tracy said he would like for a replacement to be named no later than the day after the upcoming Republican National Convention in Milwaukee.