Vice President Biden and Republican Paul Ryan get their turn in the spotlight Thursday night, debating the issues in a 90-minute session at Centre College in Danville, KY.

Their meeting comes eight days after the first of three presidential debates between President Obama and GOP challenger Mitt Romney, a contest that most observers awarded to Romney. Those two meet again next Tuesday and again on Oct. 22.

Martha Raddatz of ABC News will moderate starting at 6pm PT / 9pm ET.

As you watch, here are five things to keep an eye on… (MORE)