On Monday morning, Dr. Ben Carson and former Hewlett-Packard CEO Carly Fiorina have near-simultaneous announcements planned — the black neurosurgeon will launch from his hometown of Detroit, while Fiorina plans a lower-key start with a press call and an online townhall later that afternoon. 

The next day, former Arkansas Gov. Mike Huckabee is expected to launch his second bid for president from his storied hometown of Hope, Ark. 

Republican observers are especially enthused by the entrance of Carson, the only African-American in the field, and Fiorina, who’s likely to be the only female GOP candidate, to bring added diversity to a field that already includes two Cuban Americans in Sens. Marco Rubio (Fla.) and Ted Cruz (Texas).

“The diversity is great,” said GOP strategist Matt Mackowiak. “It shows we’re a much broader party than the caricature some try to put on us.”