In October 2010, Biden said Obama had asked him to remain as his running mate for the 2012 presidential election, but with Obama's popularity on the decline, White House chief of staff William M. Daley conducted some secret polling and focus group research in late 2011 on the idea of replacing Biden on the ticket with Hillary Clinton.
The notion was dropped when the results showed no appreciable improvement for Obama, and White House officials later said Obama had never entertained the idea.

Biden's May 2012 statement that he was "absolutely comfortable" with same-sex marriage gained considerable public attention in comparison to Obama's position, which had been described as "evolving".
Biden made his statement without administration consent, and Obama and his aides were quite irked, since Obama had planned to shift position several months later, in the build-up to the party convention, and since Biden had previously counseled the president to avoid the issue lest key Catholic voters be offended.
Gay rights advocates seized upon Biden's statement, and within days, Obama announced that he too supported same-sex marriage, an action in part forced by Biden's unexpected remarks.
Biden apologized to Obama in private for having spoken out, while Obama acknowledged publicly it had been done from the heart.
The incident showed that Biden still struggled at times with message discipline, as Time wrote, "Everyone knows Biden's greatest strength is also his greatest weakness."
Relations were also strained between the campaigns when Biden appeared to use his position to bolster fundraising contacts for a possible run for president in 2016, and he ended up being excluded from Obama campaign strategy meetings.

The Obama campaign nevertheless still valued Biden as a retail-level politician who could connect with disaffected, blue-collar workers and rural residents, and he had a heavy schedule of appearances in swing states as the Obama reelection campaign began in earnest in spring 2012.
An August 2012 remark before a mixed-race audience that Republican proposals to relax Wall Street regulations would "put y'all back in chains" led to a similar analysis of Biden's face-to-face campaigning abilities versus his tendency to go off track.
The Los Angeles Times wrote, "Most candidates give the same stump speech over and over, putting reporters if not the audience to sleep.
But during any Biden speech, there might be a dozen moments to make press handlers cringe, and prompt reporters to turn to each other with amusement and confusion."
Time magazine wrote that Biden often went too far and "Along with the familiar Washington mix of neediness and overconfidence, Biden's brain is wired for more than the usual amount of goofiness."

Biden was officially nominated for a second term as vice president on September 6 by voice vote at the 2012 Democratic National Convention in Charlotte, North Carolina.
He faced his Republican counterpart, Representative Paul Ryan, in the vice-presidential debate on October 11 in Danville, Kentucky.
There he made a feisty, emotional defense of the Obama administration's record and energetically attacked the Republican ticket, attempting to regain the momentum lost by Obama's unfocused debate performance against Republican nominee Mitt Romney the week before.

On November 6, 2012, Obama and Biden were elected to second terms.
The ticket won 332 Electoral College votes to Romney–Ryan's 206 and 51% of the popular vote.

In December 2012, Obama named Biden to head the Gun Violence Task Force, created to address the causes of gun violence in the United States in the aftermath of the Sandy Hook Elementary School shooting.
Later that month, during the final days before the United States fell off the "fiscal cliff", Biden's relationship with McConnell once more proved important as the two negotiated a deal that led to the American Taxpayer Relief Act of 2012 being passed at the start of 2013.
It made many of the Bush tax cuts permanent but raised rates on upper income levels.
In October 2010, Biden said Obama had asked him to remain as his running mate for the 2012 presidential election, but with Obama's popularity on the decline, White House chief of staff William M. Daley conducted some secret polling and focus group research in late 2011 on the idea of replacing Biden on the ticket with Hillary Clinton. The notion was dropped when the results showed no appreciable improvement for Obama, and White House officials later said Obama had never entertained the idea.
Biden's May 2012 statement that he was "absolutely comfortable" with same-sex marriage gained considerable public attention in comparison to Obama's position, which had been described as "evolving". Biden made his statement without administration consent, and Obama and his aides were quite irked, since Obama had planned to shift position several months later, in the build-up to the party convention, and since Biden had previously counseled the president to avoid the issue lest key Catholic voters be offended. Gay rights advocates seized upon Biden's statement, and within days, Obama announced that he too supported same-sex marriage, an action in part forced by Biden's unexpected remarks. Biden apologized to Obama in private for having spoken out, while Obama acknowledged publicly it had been done from the heart. The incident showed that Biden still struggled at times with message discipline, as Time wrote, "Everyone knows Biden's greatest strength is also his greatest weakness." Relations were also strained between the campaigns when Biden appeared to use his position to bolster fundraising contacts for a possible run for president in 2016, and he ended up being excluded from Obama campaign strategy meetings.
The Obama campaign nevertheless still valued Biden as a retail-level politician who could connect with disaffected, blue-collar workers and rural residents, and he had a heavy schedule of appearances in swing states as the Obama reelection campaign began in earnest in spring 2012. An August 2012 remark before a mixed-race audience that Republican proposals to relax Wall Street regulations would "put y'all back in chains" led to a similar analysis of Biden's face-to-face campaigning abilities versus his tendency to go off track. The Los Angeles Times wrote, "Most candidates give the same stump speech over and over, putting reporters if not the audience to sleep. But during any Biden speech, there might be a dozen moments to make press handlers cringe, and prompt reporters to turn to each other with amusement and confusion." Time magazine wrote that Biden often went too far and "Along with the familiar Washington mix of neediness and overconfidence, Biden's brain is wired for more than the usual amount of goofiness."
Biden was officially nominated for a second term as vice president on September 6 by voice vote at the 2012 Democratic National Convention in Charlotte, North Carolina. He faced his Republican counterpart, Representative Paul Ryan, in the vice-presidential debate on October 11 in Danville, Kentucky. There he made a feisty, emotional defense of the Obama administration's record and energetically attacked the Republican ticket, attempting to regain the momentum lost by Obama's unfocused debate performance against Republican nominee Mitt Romney the week before.
On November 6, 2012, Obama and Biden were elected to second terms. The ticket won 332 Electoral College votes to Romney–Ryan's 206 and 51% of the popular vote.
In December 2012, Obama named Biden to head the Gun Violence Task Force, created to address the causes of gun violence in the United States in the aftermath of the Sandy Hook Elementary School shooting. Later that month, during the final days before the United States fell off the "fiscal cliff", Biden's relationship with McConnell once more proved important as the two negotiated a deal that led to the American Taxpayer Relief Act of 2012 being passed at the start of 2013. It made many of the Bush tax cuts permanent but raised rates on upper income levels.
Joe Biden