(CNN) - With just over two weeks to go until Election Day, and Monday's presidential debate fast approaching, a new national poll taken after the second debate shows the race for the White House in a dead heat.
The NBC/Wall Street Journal poll released Sunday shows both President Barack Obama and Republican nominee Mitt Romney with 47% support among likely voters. The survey's margin of error is plus or minus 3.43 percentage points for that group.
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Among the larger pool of registered voters surveyed in the NBC/WSJ poll, Obama holds a five-point advantage, 49% to Romney's 44%. The margin of error for that larger group is 3.1 percentage points.
The last NBC/WSJ survey - taken before any of October's presidential debates - showed the president with a slight advantage over his Republican challenger by three points, 49% to Romney's 46%, with a margin of error of plus or minus 3.4 percentage points. The difference in the surveys suggests Obama's advantage is slipping and that Romney's debate performances may have had an effect.
Romney was overwhelmingly considered the winner of the first presidential showdown, while Obama appeared to narrowly best the GOP nominee in the second debate. The candidates will square off for the final time Monday night at Lynn University in Boca Raton, Florida.
And with the debate to be squarely focused on foreign policy, the new survey shows Obama ahead of Romney by three points on the question of which candidate would be better as commander in chief. In last month's poll, Obama had an eight point margin over Romney for the same question.
The GOP nominee also fares better, 46% to 40%, in the poll when voters are asked which candidate would best handle the economy. Romney further polls ahead of Obama on jobs and unemployment, as well as the federal budget deficit.
Obama, however, has more support on likability and appeal to women and middle class voters. Sunday's survey found Obama leading among likely women voters by eight points, 51% to Romney's 43%, while Romney leads among likely male voters by ten points, 53% to Obama's 43%.
Asked which candidate would be better at dealing with issues of concern to women, 53% chose Obama, while 25% chose Romney. Asked a similar question about the middle class, Obama again falls ahead, 52% to 35%.
The NBC/WSJ poll was conducted from October 17-20 among 1,000 registered voters and 816 likely voters.
– CNN's Ashley Killough contributed to this report.