This election reflects the fact that Republicans and Democrats have both become minority parties relying on base voters instead of a decisive electoral majority.

The Siena College Research Institute poll showed Harris had a 58%-39% lead over Trump in the state dominated more than 2:1 by Democratic enrollment. Harris’ 19- percentage point lead — her biggest in New York — grew from 55%-42% in September.

A Democratic polling group has found the most persuasive argument the vice president can use in the final weeks of her campaign.