In an age of cellphone cameras and gaffes gone viral, political candidates are more guarded than ever. And while some of that caution has spilled over into debates, televised match-ups represent the best chance for something truly revealing. Senator Scott Brown and Elizabeth Warren will have plenty of opportunities: The pair has agreed to four televised debates, the most of any Massachusetts Senate race since 1996. As they head into the debate Thursday night, here is a look at US Senate debates of the past.

Advertisement - Continue Reading Below