Party voting on environmental bills moved together in the 1970s but not the 1990s.

Evidence

Even more particularly, during the 1970s, the Democratic and Republican scores were quite different than in the 1990s, with the former about twenty points higher than the latter, but they also rose and fell together. When one political party’s scores went up or down, so did the other’s, almost to the exact same extent. Members of the two parties appear to have been reacting similarly to bills before Congress, sometimes in support of positions favored by environmentalists and sometimes not. They both increased at the outset of the decade, decreased in response to the energy PointsawardedbytheLeagueofConservationVotersforsupportofenvironmental initiatives in the U. — Richard J. Lazarus, The Making of Environmental Law, 680

Categorization

• XREF: connects to: Environmental lawmaking polarized completely along party lines by the 1990s. — Richard J. Lazarus, The Making of Environmental Law, 685; Bipartisan competition and industry preference for uniformity drove 1970s federal environmental law. — Richard J. Lazarus, The Making of Environmental Law, 261; Environmental protection stayed bipartisan across presidents of both parties through the 1980s. — Richard J. Lazarus, The Making of Environmental Law, 671