Politics *Video* Joe Biden can't stop laughing October 11, 2012 | Modified: October 11, 2012 at 10:31 pm Leave a comment Republican vice presidential nominee Rep. Paul Ryan, of Wisconsin, right, watches as Vice President Joe Biden, speaks during the vice presidential debate at Centre College, Thursday, Oct. 11, 2012, in Danville, Ky. (AP Photo/David Goldman) Just in from "Now This News". . . Vice President Joe Biden can't stop laughing Sign Up for the Politics Digest newsletter! Please enter your email address below to begin receiving the Politics Digest newsletter. You must enter a valid email address in the field above! Thank you for signing up for the Politics Digest newsletter! You should receive your first newsletter very soon. We're sorry, there was an error processing your newsletter signup. Please click here to visit our Newsletter Signup Center to register for this newsletter.