Tune in Tuesday night at 10p/1a ET as Sen. Rand Paul (R-Ky.) sits down with Sean Hannity for the full hour after the announcement of his 2016 presidential run. 

Sen. Rand Paul (R-Ky.) released a video today ahead of tomorrow's formal announcement of his bid for the 2016 Republican presidential nomination. 

In the clip, Paul describes himself as a a "different kind of Republican" and the video ends with him saying, "It's time for a new way. A new set of ideas. A new leader, one you can trust. One who works for you and, above all, it's time for a new president," as a crowd wildly chants "President Paul!"

On "Fox and Friends" this morning, Donald Trump was asked whether he believes Paul has a chance to win the nomination. 

He agreed that Paul and numerous others could emerge as the GOP candidate, including himself. Trump said he finished fourth out of 22 candidates in a recent poll, even though he hasn't done much yet to try to win support. 

Steve Doocy pointed out that Trump hasn't been included in many polls because there is a sense among observers that he isn't serious about running. 

"I am totally serious. They will soon find that out," said Trump, explaining that he's hiring staff in Iowa, South Carolina and New Hampshire.

"I'm tired of watching politicians screw up this country. We have a president who's incompetent, doesn't know what to do," he said.

Watch the full interview above, including Trump calling the Iran nuclear agreement a "disgrace."