I don’t like using wiki, because the information can be suspect at times...
In it, it says jeb got through super tuesday, then dropped out feb 20, 2016
https://en.wikipedia.org/wiki/2016_Republican_Party_presidential_primaries
TFTL
“Bush announced his presidential candidacy on June 15, 2015. He suspended his campaign on February 20, 2016, shortly after the South Carolina primary, and endorsed Senator Ted Cruz on March 23, 2016.”
Desantis won’t last must past Iowa. IMO