Aides for Marco Rubio and Rand Paul's campaign scuffled in a Michigan bar on Thursday. American political history is littered with other similar confrontations.
The announcement is welcome news for political campaigns, which all want to make it as seamless as possible for supporters to turn over their money and personal information.
"We have a problem in this country," the town hall attendee said. "It's called Muslims. We know our current president is one." Trump's political rivals denounced his response (or lack thereof).
Citing concerns about developments overseas, the Federal Reserve voted to leave interest rates unchanged Thursday. Many had expected the Fed to raise the federal funds rate by a quarter-point.
Call it the stock market of politics. A new trading market allows people to essentially place bets on who will win a debate, get the most speaking time and more. And it walks a fine legal line.