Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
The Wayback Machine - https://web.archive.org/web/20240118122330/https://www.pewresearch.org/politics/wp-json/oembed/1.0/embed?url=https%3A%2F%2Fwww.pewresearch.org%2Fpolitics%2F2019%2F03%2F14%2Fpolitical-independents-who-they-are-what-they-think%2F
