The depression of the 1930s and the onset of World War II brought far-reaching change to the League. Membership fell from 100,000 in 1924 to 44,000 in 1934. The National League's budget was cut in half, necessitating a major reduction in staff and services to Leagues. Perhaps the most important change was that because of gas rationing, League members started meeting in small groups in their neighborhoods to discuss fundamental issues. These issues included the threat to democracy itself and the importance of the informed individual to the success of democracy. Grassroots activity thus was firmly institutionalized as a way of assessing concerns, studying and strategizing.
League members worked successfully for enactment of the Social Security and Food and Drug Acts, as well as the TVA. In 1934, when federal and state government agencies were hiring thousands of employees to administer the new social and economic laws, the League launched a nationwide campaign in support of the merit system for selecting government personnel. In those years the League was the only national organization acting consistently for the merit system. And due, at least in part, to League efforts, legislation passed in 1938 and 1940 removed hundreds of federal jobs from the spoils system and placed them under Civil Service.