@PatriciaMazzei

Hillary Clinton picked up an endorsement Monday from the city of Miami's last Democratic mayor.

Manny Diaz told the Miami Herald he has decided to back Clinton, his 2008 presidential candidate, after earlier this election cycle supporting Martin O'Malley.

O'Malley, the former Maryland governor and Baltimore mayor, had befriended Diaz when both headed their respective cities. Diaz hosted O'Malley in Miami last year, but his presidential campaign proved to be short-lived.

Diaz issued his Clinton endorsement in a statement to the Herald titled, "When Main Street Prospers, So Does America."

As former Mayor of Miami and President of the US Conference of Mayors, I live and understand the daily needs of a city and its people – the things that matter most to all of us.

Over 85% of the American people live in metro areas. These areas are the economic engines responsible for over 85% of all jobs, income, economic growth and GDP. These are the places where we work, raise our children, worship and where neighbors help one another.

When Main Street prospers, so does America.

But, if America is to remain competitive, if we are to preserve the American Dream for future generations, we must continue to invest in the things that help us grow Main Street; we must invest in job creation, education, infrastructure, public transit, public safety, housing, health care and the environment -- investments in the hope and opportunity we all deserve.

The next president must understand the need to refocus on what makes America great -- that an investment in America’s Main Street, our cities, is an investment in the American people, an investment in America's future.

That is why today, I am proud to endorse someone who understands and has always been a partner of America’s cities, Secretary Hillary Clinton.

Miami's current mayor, Republican Tomás Regalado, supports Marco Rubio.