 As for the convention's list of speakers, CBS News has learned that two top campaign surrogates, Florida Congressman Byron Donalds and Arkansas Senator Tom Cotton, have primetime speaking spots. And Trump's former rival, Florida Governor Ron DeSantis, will also speak. Now, Nikki Haley, who also challenged Trump for the nomination, was not invited to attend this convention. Before Trump arrives here in Milwaukee, he'll hold a rally in the battleground state of Pennsylvania tomorrow.