As of 2017 , she has a lifetime score of 91 % on the League 's National Environmental Scorecard .
In 2004 Cantwell received the highest rating possible from the League of Conservation Voters for her environmental voting record .
As of 2017 , Cantwell has a lifetime score of 91 % on the League of Conservation Voters 's National Environmental Scorecard .
In 2004 Cantwell received the highest rating possible from the League of Conservation Voters for her environmental voting record .