Desantis Roll Out News Today

hosted by billionaire ceo elon musk on twitter. but is this state big enough for two candidates? plus, how florida is about to become center stage for presidential politics. also tonight, the security scare in the shadow of the white house. new details out tonight on the man accused of ramming a rented u-haul truck into security barriers over and over. the 19-year-old suspect making threatening statements. police say before his arrest, a nazi flag seized. the latest in a growing numb...

Second night on the road in florida. we begin with dasha burns, who broke the news of the unusual desantis roll-out. >> reporter: tonight were just 24 hours away from an expected major shakeup in the republican race for president, with florida governor ron desantis ready to jump in. >> stay tuned, stay tuned. >> reporter: and now nbc news learning exclusive details about that announcement, which will feature a surprise guest. desantis set to reveal his presidential run in a discussion with billi...