Pence, who will be renominated as Trump's running mate after on-and-off speculation that he would be dropped from the ticket, is the highest ranking official to address the four-day convention.
"Also scheduled to speak on Tuesday were Trump's son, Eric, and daughter, Tiffany, as well as Iowa Governor Kim Reynolds and U.S. Senator Rand Paul of Kentucky."
Republicans had vowed to offer an inspiring, positive message in contrast to what they characterized as a dark and gloomy Democratic convention last week.