In 2017, voters in Santa Fe, New Mexico, rejected a proposed tax on sugary drinks that would have raised soft drink prices by 2 cents per ounce. A Santa Fe newspaper reported that in a lower-income district, 73 percent voted against the tax. In two higher-income districts, the vote was evenly split between supporters and opponents of the tax. Do the results of the vote suggest that the tax would have been regressive or progressive? Briefly explain.