About 30,000 people are expected to participate in the clinical trials in the coming months. Today is a day of hope, today is a day of promise, today is a tribute to American ingenuity, Pence told reporters. Ron DeSantis marked the third time the vice president has come to the state during the past month. The vice presidents visits also have come as DeSantis has seen his poll numbers drop as numbers of coronavirus cases have surged. Pence and DeSantis contended in their remarks Monday that Floridas surge had peaked, and cases were beginning to stabilize.