[Mitchell] Schwartz said [Hillary] Clinton's campaign in California – which has been heavy on endorsements and organization – is more "grasstops" than "grassroots," while the Illinois senator [Barack Obama] has "a campaign of inspiration and not obligation."
2015, James E. Anderson, “The Policy-makers and Their Environment”, in Public Policymaking: An Introduction, 8th edition, Stamford, Ct.: Cengage Learning, →ISBN, page 64:
In recent years, groups have made considerable use of "outside lobbying" techniques, which try to persuade ordinary citizens to serve as their frontline advocates. Prominent here are "grass-roots" and "grass-tops" lobbying. […]Grass-tops lobbying strives to favorably energize an elite rather than the masses.