Vice President Kamala Harris entered the homestretch of the general election building a campaign that was bigger than former President Donald J. Trump’s in nearly every discernible category. She is raising more money than Mr. Trump, with her campaign collecting more than four times as much as his did in August.

Whatever control and self-restraint helped launch Trump’s third presidential campaign has largely disappeared.

Donald Trump has vowed to reduce taxes if he returns to the White House but his lack of details makes it hard to know exactly who would benefit.

The GOP has lagged behind Democratic candidates every election cycle since 1988, but polling for 2024 shows the gap narrowing.