Supporters of a proposal to curb the influence of corporate money in District politics said Monday that the city’s elections board erred when it ruled that the activists pushing the idea didn’t collect enough valid signatures to secure a place on the November ballot.

“The board miscounted,” the D.C. Public Trust said in an appeal that challenged the D.C. Board of Elections and Ethics’ Aug. 8 decision. “To a reasonable certainty, the board committed an egregious error.”