Vice President Joe Biden speaks at the 5th Annual Concordia Summit on Oct. 1.

Barack Obama and his top aides struggled to fend off questions about Vice President Joe Biden’s possible 2016 run on Monday, as rampant speculation threatened to eclipse the White House’s political message.

Amid reams of Washington conjecture, outright speculation and a trending #bidenwatch Twitter hashtag, Obama was again asked whether his 72-year-old deputy would enter the race to succeed him.

“We’re talking about climate change today,” Obama said.

It is an issue that has become increasingly distracting for a White House that prides itself on trying to shape the daily media agenda.

One Democratic lawmaker, Brendan Boyle, went as far as to declare for Biden on social media.

“I have a very good source close to Joe that tells me VP Biden will run for Prez,” the US congressman tweeted.

The White House was a little less forthcoming.

“The vice president himself needs to make this decision,” said spokesman Josh Earnest, in one of a series of questions from reporters during the regular daily briefing.

“It’s something that he’s obviously been considering not just over the last several months, but I think probably even longer. And when he’s arrived at a decision, I’m confident it’s one he’ll announce.”

Earnest denied that the speculation was a problem, but said that sooner or later a decision would have to be made.

“I think that anybody who has served this party and this country as long as the vice president has is entitled to all of the time and space that they need to make this personal decision,” said Earnest.

“The laws of physics will require that this is a decision that be announced relatively soon, because the date of these contests is coming up. But for the precise date, that’s something that only the vice president knows.”

Biden – as much a back-slapping, hand-shaking, old-school retail politician as he is a statesman – is popular with voters and has garnered great sympathy following the recent death of his son.

According to a recent CNN poll of around 1,000 people, Biden has 51 percent favorable ratings, versus Hillary Clinton’s 46 percent.

Crucially, he is less distrusted, with 37 percent of those polled holding unfavorable views, versus 50 percent for Clinton.

Related articles across the web

• Pope Francis stars in the White House's first Periscope broadcast
• Shock: Obama's Official White House Media Czar Launches Birther Attack Against 13 Year Old Boy
• Members of Congress join the masses to welcome the Pope
• "Say something about the Negroes", A Reporter Asked The Pope At The White House
• Joe Biden On White House Run: "I May Not Make It"
• URGENT - Obama Texas Student Ahmed Mohamed
• URGENT - Obama Texas Student Ahmed Mohamed
• With Wife's Blessing Secured Joe Biden Looks Likely to Join Presidential Race
• The White House Joins Periscope And Broadcasts Pope's Visit
• Pope Greeted By Thousands At White House