U.S. presidential election shifts into another gear, with focus primarily on 7 states

Pennsylvania, site of next week’s debate, seeing the highest ad spending of any battleground state.
After a summer of historic tumult in U.S. presidential politics, Kamala Harris and Donald Trump begin an eight-week sprint to election day neck-and-neck in most national polls.
Democrats have been buoyed by Harris’s nomination, following Joe Biden’s decision to abandon a second term in office following a disastrous performance in an atypically early June presidential debate against Trump.
But the party knows all too well that national results only tell so much. Democratic presidential candidates have earned more votes than Republican opponents in seven of the last eight presidential elections held since 1992, but only put a winner into the Oval Office on five of those occasions, due to electoral college system results.Harris and Trump will devote almost all of their remaining time and resources ahead of Nov. 5 to just seven states that are seen as the most impactful to getting to the 270-vote threshold in the electoral college, in addition to swing districts in Nebraska and Maine that each award single electoral college votes. Those seven states are: Arizona, Georgia, Michigan, Nevada, North Carolina, Pennsylvania and Wisconsin..
.Source:cbc.ca/news/world