Cruz won ID and only slipped 15 delegates to Trump.
Cruz has every reason to stay in the race until Trump gets to 1237 delegates.
Every State Cruz wins helps him for 2020 and 2024
You would think it would help Cruz in 2020 or 2024 but no guanantees if you look at huckabee and Santorum. Darlings of 2008 and 2012 went down quick in their repeat.