Two of the nation’s most-contested battleground states — Pennsylvania and Arizona — illustrate the difficulties each campaign faces in gaining a clear advantage in the final stretch of the 2024 race, with Vice President Kamala Harris maintaining a narrow lead in Pennsylvania but former President Donald Trump continuing to hold an advantage in Arizona, according to a new pair of New York Times/Philadelphia Inquirer/Siena College polls.

The polls, from two states separated by more than 2,000 miles, show the challenge confronting both campaigns as they try to make their closing pitches to a diverse set of voters who have, at times, competing priorities.

In Arizona and Pennsylvania, Harris has consolidated support among Democrats since replacing President Joe Biden as the party’s nominee. But Trump’s strength remains the economy, the issue primarily responsible for his political potency across Arizona and other battleground states this year.

In Pennsylvania, Harris’ polling lead has been steady, though the state remains tight. Her advantage, 50% to 47%, falls inside the margin of error. But this was the third Times/Siena survey in two months showing support for Harris from at least half of the state. (Her lead in the poll was 4 percentage points when calculated using unrounded figures.)

Fueling Harris in the state is her commanding lead of nearly 20 percentage points when it comes to handling abortion, her single best issue across battleground states and the second most important concern for Pennsylvania voters.

Trump’s strength in Pennsylvania remains the economy. He had an 11-point advantage over Harris on the issue, up from a 4-point gap in September.

In Arizona, Trump was ahead, 51% to 46%, or 6 percentage points when calculated using unrounded figures, nearly unchanged from September, when the poll showed the former president leading, 50% to 45%.

Bolstering Trump’s advantage in Arizona was, once again, the economy. More Arizonans said they preferred him over Harris on that issue, 56% to 41%. More Arizonans expect Trump to be better at helping people like themselves, and he has a slight edge on the question of who would be better at helping the working class. That was a contrast from Pennsylvania, where voters give Harris similarly narrow advantages on the same questions.

Arizona and Pennsylvania also feature hotly contested Senate contests. The Democratic candidate in each holds a clear advantage, according to the new polling.