Biden's lagging in battleground states. Can he catch up?

The latest New York Times/Philadelphia Inquirer/Siena College battleground polling held some bad news for President Joe Biden and some good news for Senate Democrats. 

Among registered voters, Biden is trailing Donald Trump in five of the six states polled:  

• Wisconsin: Biden +2 (47% to 45%)

• Pennsylvania: Biden -3 (44% to 47%)

• Arizona: Biden -7 (42% to 49%)

• Michigan: Biden -7 (42% to 49%)

• Georgia: Biden -10 (39% to 49%)

• Nevada: Biden -12 (38% to 50%)

Conversely, Senate Democratic incumbents and candidates are running ahead of their likely challengers with registered voters in the four states polled:

• Wisconsin: Sen. Tammy Baldwin +9 over Eric Hovde (49% to 40%)

• Pennsylvania: Sen. Bob Casey +5 over David McCormick (46% to 41%)

• Arizona: Rep. Ruben Gallego +4 over Kari Lake (45% to 41%)

• Nevada: Sen. Jacky Rosen +2 over Sam Brown (40% to 38%)

Biden did poll slightly better among likely voters in the blue wall states as a group, pulling ahead of Trump in Michigan while closely trailing Trump in Pennsylvania and Wisconsin. Still, among registered voters, Biden underperformed Senate Democratic candidates in every state by anywhere from a handful of points to double digits.