Earlier this afternoon, Gov. Jon Corzine's campaign (D-N.J.) took to Twitter to "live-tweet" a campaign event at which Vice President Joe Biden's spoke on the incumbent's behalf. 

Corzine's campaign and his Republican opponent Chris Christie's campaign have been very active on Twitter throughout the competitive race.

Here are some of the messages Corzine's campaign tweeted during the event:

http://twitpic.com/m4vhy - Crowd is fired up and ready to go!

Rabbi's for #njgov Corzine! http://twitpic.com/m4z4d

http://twitpic.com/m599z - #njgov Corzine: "Christie does not share New Jersey's values"

http://twitpic.com/m5bns - @joebiden: "I am proud to stand with Barack's partner and my friend, Jon Corzine"

AP: Christie's Ritz-Carlton stay in Orlando cost taxpayers $287, more than 2X govt allowance. Orlando has ~450 hotels http://bit.ly/tssRN

Corzine keyed in on recent attacks on Christie, which involve alleged overbilling on trips during his time as a U.S. Attorney. Christie is holding onto a narrow lead in the polls, but Corzine has picked up momentum recently.

Later today, Biden is attending an event for Sen. Arlen Specter (D-Pa.) who is facing a 2010 primary challenge from Rep. Joe Sestak (D-Pa.)

Christie did not directly address the rally on his campaign's Twitter feed.