Each answer resolves YES if Trump's vice presidential running mate is officially announced by the specified date, Pacific time. Otherwise resolves NO (that includes if Trump drops out before selecting a running mate, for example).
Any information in parenthesis is only for context: for example if the first debate is rescheduled that doesn't affect resolution, only the date is used for resolution.
https://abcnews.go.com/amp/Politics/trumps-vp-announcement-monday-adviser/story?id=111745435
By this time next Monday, we will know who President Trump has selected as his running mate for the 2024 election," Miller said during a Monday appearance on Fox & Friends. "It could happen any time this week. Could happen literally right up until the first day of the convention,"