FROM CNN's Jack Cafferty:
Joe Biden's recent gay marriage gaffe is only the latest example of the vice president stepping in it.
And some are starting to openly wonder if Biden is the best running mate for President Obama in what is shaping up to be a close contest against Mitt Romney.
Republicans are making a strategy of targeting Biden, following him closely on the campaign trail in the hopes that he slips up.
A source close to Romney tells Politico that Biden is "a ticking time bomb. Who the hell knows what he's going to say?"
And another Republican describes the veep as "the chink in the armor" - someone likely to commit unforced errors.
Biden's off-script moments are legendary, from describing then-candidate Obama as "clean" and "articulate" in an interview to calling Obama’s health care reform a "big f***ing deal" on mic.
But Democrats insist Biden is the best surrogate for the president. He connects with working class voters in a way that the sometimes aloof president can't.
Also, Biden is a great attack dog who goes after Romney in a way Obama might not want to. Just yesterday Biden said Romney's time in private equity didn't qualify him for the White House any more than being a plumber would. Gotta love it.
Meanwhile if you listen carefully, the calls for a Vice President Hillary Clinton keep getting louder.
Clinton's approval numbers are through the roof, and some suggest that with Romney closing the gender gap and gaining among women, Obama should dump Biden for Clinton on the ticket.
It seems like a remote possibility, but stranger things have happened in politics.
Here’s my question to you: Joe Biden: asset or liability for President Obama?
Tune in to the Situation Room at 4pm to see if Jack reads your answer on air.
And, we love to know where you’re writing from, so please include your city and state with your comment.