A day after President Obama delivered a lackluster debate performance, Vice President Joe Biden went on the attack “delivering zinger after zinger” against Mitt Romney and Paul Ryan, ABC News reports.

Said Biden: “It’s bad enough that Gov. Romney won’t release the details of his tax returns. Now he won’t even release the details of what he plans on doing about your taxes. Seriously. last night the governor walked away from the centerpiece of his economic plan.”

Although everyone wants to see if President Obama’s weak performance in Wednesday’s debate eroded his lead, we’ll have to wait until next week for reliable polling data.

First Read: “And trust us: They will be PLENTY of polls for everyone to see. But realistically, the first polls you should trust that will absorb the ENTIRE impact of the debate and post-debate are the runs released no sooner than Tuesday… You want surveys that were actually in the field Sunday and Monday.”

Charlie Cook: “It would take a very consequential event to change the
trajectory of this race. Time will tell whether Romney’s strong debate
performance on Wednesday night was the event that he needed — particularly
in swing states such as Ohio. But at least he energized his supporters
and sent a clear message that the race is not over.”

Ron Brownstein: “President Obama didn’t have many good moments in this week’s first presidential debate. But it was telling that the few came when he was raising objections to Mitt Romney’s tax, spending, and Medicare plans. The president had much less to say about his own ideas for the next four years. In that way, the debate spotlighted the biggest hole in Obama’s reelection effort: the paucity of specifics he has offered about his second-term agenda.”

Mitt Romney insisted during the first presidential debate that he does support a $5 trillion tax cut.

First Read: “But here’s the problem for the Romney campaign: We know the math how you get to just about $5 trillion in tax cuts over 10 years. It starts with reducing tax rates across the board by 20%, eliminating the Alternative Minimum Tax and erasing the federal estate tax. Together, that comes to $450-$480 billion by 2015. You do that over 10 years (standard budget estimations), and you get about $5 trillion. But what we don’t know is the math of how you offset the nearly $500 billion per year as Romney has pledged, because the Romney campaign has yet to provide any specifics about what he would cut.”

“The math isn’t just hard; it becomes nearly impossible (at least politically) once you account for the pledge handcuffs. The Romney campaign is hoping to make it until November without having to provide its own straw man beyond, ‘that’s not true.’ The downside of getting the real second look the campaign wants is that they will need to provide some answers to this $5 trillion question.”

The U.S. economy added 114,000 jobs in September while the unemployment rate fell to 7.8%.

The Financial Times notes it’s the lowest unemployment rate since President Obama took office.

First Read: “We continue to see these monthly jobs numbers have very little impact on the public. Yet they have had a bigger impact on the tone of the political coverage in a 24- to 48-hour period, and that helps the Obama campaign change the subject from Wednesday night’s debate. In addition, do not underestimate the psychological impact of the unemployment rate falling BELOW 8%. It’s been an anchor around the president’s leg politically for years, not months.”

Wonk Wire has a roundup of reactions.

Mitt Romney’s “widely praised performance in the first presidential debate gave his campaign a boost. History shows these kinds of gains, especially by a challenger, are often fleeting,” the Wall Street Journal reports.

“Historians have noted this recurring phenomenon in presidential debates: Incumbent presidents, whether articulate or otherwise, often fare poorly in their first encounter with challengers, in part because their debating skills are rusty. After nearly four years in the Oval Office, presidents are accustomed to more deference than this type of blunt face-off. For challengers, meanwhile, the first appearance onstage with a president tends to enhance their stature.”

“Mitt Romney’s challenge, with less than five weeks until Election Day, is to convince voters that the steady, decisive, in-command competitor who showed up for the first presidential debate is the real Mitt Romney,” the Washington Post reports.

“The Romney whom viewers saw next to President Obama on Wednesday night is not the candidate they’ve come to know through many months of attack ads and replayed gaffes.”

New York Times: “Mr. Romney’s senior aides warned staff members and donors that the race was hardly won. But they said the debate reversed the sagging morale of volunteers and contributors and dispelled what had been a growing notion that the race was slipping away from Mr. Romney.”

Mitt Romney tried to distance himself from perhaps his most damaging campaign moment, saying that his infamous “47 percent” remarks were “completely wrong,” National Journal reports.

Said Romney: “Clearly in a campaign with hundreds if not thousands of speeches and question-and-answer sessions, now and then you are going to say something that doesn’t come out right. In this case I said something that’s just completely wrong. And I absolutely believe, however, that my life has shown that I care about 100 percent. And that has been demonstrated throughout my life. And this whole campaign is about the 100 percent. When I become president it will be about helping the 100 percent.”

“When he was asked what he would do to actually cut spending and reduce the deficit, he said he’d eliminate public television funding. But I just want to make sure got this straight. He’ll get rid of regulations on Wall Street — but he’s going to crack down on Sesame Street.”

— President Obama, quoted by TPM, on Mitt Romney’s statements in last night’s debate.

A person close to the debate-prep process told Politico that President Obama was “supposed to have been more aggressive within the confines of civility, but opted for a more passive approach that missed ‘many, many opportunities’ – including the glaring failure to mention Romney’s infamous ’47 percent’ comments…”

“…Even as strategists downplayed the likely electoral impact of the debate, one Democrat close to Chicago conceded that Obama ‘was not happy with his performance.'”

Said the source: “Don’t expect to see that Barack Obama again.”

The Obama campaign “set a new monthly fundraising record for the 2012 election cycle, taking in more than $150 million in September as supporters rallied behind the president in the final phase of the election,” the Wall Street Journal reports.

“The September total far surpasses the $114 million raised in August, when the Obama team snapped a three-month streak in which it was outraised by Republican challenger Mitt Romney. At the time, the $114 million was the most the Obama campaign had collected in any one month in the 2012 election season. The most the Romney campaign has collected so far was $111 million in August.”

TV Newser: “More than 58 million people watched the first Presidential debate last night between President Obama and Mitt Romney, up substantially from the first debate in the 2008 election cycle, which had 52.4 million viewers.”

In a segment on Current TV, Al Gore blamed Denver’s high altitude for President Obama’s poor debate performance.

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The Obama campaign is up with a new ad in seven swing states hitting Mitt Romney on his tax plan after the president was roundly criticized in last night’s debate for not challenging his opponent.

Greg Sargent: “The ad’s approach is straightforward: It corrects Romney’s obfuscations with facts. It shows Romney claiming his plan won’t cut taxes by $5 trillion, then points out that the nonpartisan Tax Policy Center found that it would, in fact, cost $4.8 trillion over 10 years.”

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BuzzFeed notes that President Obama and his aides “rapidly reversed their strategic course Thursday morning, shifting the center of their attacks on Mitt Romney back toward the oldest criticisms of the Republican: That he’s a flip-flopper.”

“Democrats had long been torn over whether to portray Romney as too conservative, or too inconsistent, for the electorate — realizing that the attacks are inconsistent with one another. And since this spring, they seemed to have settled on the former, casting Romney as a conservative whose policies of cutting taxes and spending, and on abortion and other social issues, are too far right for most voters.”

Here are the latest polls from the battleground states, updated as needed through the day:

Iowa: Obama 49%, Romney 45% (Des Moines Register)

Ohio: Obama 51%, Romney 42% (Columbus Dispatch)

Ohio: Obama 49%, Romney 45% (Public Policy Polling)

North Carolina: Obama 48%, Romney 48% (Public Policy Polling)