Real-estate developers, unions and some wealthy luminaries who do business with the city contributed millions of dollars to the campaigns of Columbus elected officials.

City officials raised about $8.4 million from nearly 5,000 contributors disclosed on reports filed from mid-2014 through 2017, but more than 60 percent of that money came from less than 4 percent of the contributors, according to a Dispatch analysis of more than 12,000 campaign contributions.

These large donations have prompted critics to question what influence that money leverages in City Hall.