A new Wall Street Journal/NBC News poll finds Joe Biden leading Donald Trump nationally, 52% to 42%.
However, the survey finds the race tightening when the landscape is narrowed to a set of 12 battleground states. Biden holds a 6-point lead in those states, 51% to 45%, compared with a 10-point lead last month.
Biden’s advantage in swing states is within the poll’s margin of error and corresponds with the many swing-state surveys that show a close race and potential path for Mr. Trump to build an Electoral College majority without winning the national popular vote, as he did in 2016.


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