A data frame with 112 observations on the following 10 variables.
- State
the state that the member represented
- Senator
name of the senator
- Party
a factor representing political party, with levels "R"
for Republican, "D"
for Democratic, and "I"
for Independent
- Pro2005
the number of pro-environmental votes in 2005
- Anti2005
the number of anti-environmental votes in 2005
- Pro2006
the number of pro-environmental votes in 2006
- Anti2006
the number of anti-environmental votes in 2006
- Pro2007
the number of pro-environmental votes in 2007
- Anti2007
the number of anti-environmental votes in 2007
- PctPro
the total percentage of a representative's votes between 2005 and 2007 that were deemd to be pro-environmental