Oct. 16: Presidential Debate Edition

Tuesday's debate at Hofstra University between President Barack Obama and Republican candidate Mitt Romney kicks off at 9 p.m. and runs to 10:30 p.m.

Candy Crowley, CNN's chief political correspondent, will moderate. Citizens will ask questions of the candidates on foreign and domestic issues; candidates each have two minutes to respond. An additional minute will be given to the moderator to facilitate a discussion.

Here are six things to know today, Tuesday, Oct. 16, ahead of the debate:

Security Tightens Ahead of Presidential Debate

Police Overtime Expected to Exceed $600K During Presidential Debate

Obama, Romney Campaigns Concerned About Candy Crowley

PHOTOS: Event Frenzy Hits Hofstra Campus Day Before Presidential Debate

(UPDATE) Commissioner Jackson: Presidential Debate May Cause Traffic Issues

Extra Patrols in the East to Monitor, Manage Traffic Issues