Metro Denver voters in the Nov. 5 election will decide whether to let the Regional Transportation District keep tax money that otherwise, under the Taxpayer’s Bill of Rights, would need to be returned to taxpayers. It’s a ballot question that is common for local governments, and RTD has sought similar voter approval in the past. What would 7A do if passed? The ballot measure asks voters within the area served by the transit agency’s buses and trains, in all or part of eight counties, whether to permanently exempt RTD from TABOR revenue limits — a so-called “de-Brucing” measure.