Mike Bloomberg in Phoenix

(KTAR News Photo/Peter Samore) (KTAR News Photo/Peter Samore) (KTAR News Photo/Peter Samore) Mike Bloomberg speaks to the media, Tuesday, Nov. 26, 2019 in Phoenix. Bloomberg, a late entrant in the already crowded race for the Democratic presidential nomination, was set Tuesday to file to run in Arizona's presidential primary. (AP Photo/Rick Scuteri) Mike Bloomberg speaks to the media, Tuesday, Nov. 26, 2019 in Phoenix.  Bloomberg, a late entrant in the already crowded race for the Democratic presidential nomination, was set Tuesday to file to run in Arizona's presidential primary. (AP Photo/Rick Scuteri) Mike Bloomberg files to be on the Democratic ballot in Arizona, Tuesday, Nov. 26, 2019 in Phoenix. Bloomberg, a late entrant in the already crowded race for the Democratic presidential nomination, was set Tuesday to file to run in Arizona's presidential primary. (AP Photo/Rick Scuteri) Mike Bloomberg files to be on the Democratic ballot in Arizona, Tuesday, Nov. 26, 2019 in Phoenix.  Bloomberg, a late entrant in the already crowded race for the Democratic presidential nomination, was set Tuesday to file to run in Arizona's presidential primary. (AP Photo/Rick Scuteri) 
              Mike Bloomberg speaks to the media, Tuesday, Nov. 26, 2019 in Phoenix. Bloomberg, a late entrant in the already crowded race for the Democratic presidential nomination, was set Tuesday to file to run in Arizona's presidential primary. (AP Photo/Rick Scuteri)