The letter says, "These organizations have contributed to the revitalization of American democracy, helping bring millions of people back to the process of governing the country by bringing them back to the polls.”

It also notes that, "The 2004 elections saw the greatest increase in voter participation since 1968, due, in significant part, to the work of these independent organizations.” Their funds were used to “knock on doors in communities with some of the lowest historic voter turnouts in the country.” 527s are credited with expanding the scope of the debate by raising controversial issues.