Charlie Neibergall, Associated Press
Former Florida Gov. Jeb Bush speaks during the Iowa Agriculture Summit, Saturday, March 7, 2015, in Des Moines, Iowa.

CEDAR RAPIDS, Iowa — Former Florida Gov. Jeb Bush says he will be an upbeat candidate for president if he runs for the Republican nomination.

Speaking to about 200 people squeezed into the backroom of a Cedar Rapids restaurant Saturday night, Bush said he hopes his campaign would be hopeful and optimistic.

Bush isn't yet a formal candidate, but he acted like one during his first trip to Iowa as a presidential prospect.

While in the leadoff caucus state for two days, he spoke at a congressional fundraiser and met with state party officials in the Des Moines area. He also participated in an agriculture forum along with eight other potential GOP candidates.