Trump set to become GOP nominee Tuesday night
Republican National Committee Chairman Reince Priebus has gaveled in the second day of his party's summer convention in Cleveland.
The session started with the recitation of the Pledge of Allegiance and the singing of the Star-Spangled Banner.
Set to give speeches are House Speaker Paul Ryan, Senate Majority Leader Mitch McConnell and House Majority Leader Kevin McCarthy.
New Jersey Gov. Chris Christie plans to speak, as do two of Donald Trump's children — Tiffany and Donald Jr.
But the big event is the state-by-state roll call vote for the GOP presidential nomination, when Donald Trump will become the party's White House nominee.