To see the fit statistics for the 105th Congress click here.105th House W-NOMINATE Scores (Text File -- Updated, 23 February 2001)
105th Senate W-NOMINATE Scores (Text File -- Updated, 23 February 2001)
NOMINATE scores for other Congresses can be found on the Nominate Data download page.
is a histogram of the 105th House. There is almost no overlap
between the two parties. Morella of Maryland is the left-most Republican
and she only has 4 Democrats -- Taylor of Mississippi, Goode of Virginia,
Traficant of Ohio, and Hall of Texas -- to her right.
is a histogram of the 104th House. Note that the distribution
of cutpoints is skewed to the left reflecting the fact that the Republicans
in the 104th had the support of substantial numbers of moderate
Democrats on many roll calls (including many on the Contract With America).
is a graph of the percent correct classifications from W-NOMINATE of the
House of Representatives since World War II. Houses 103-105 are the best
fitting since near the turn of the 20th Century.
is a graph of the percent gain in classification due to the second dimension.
The second dimension, which was improving classification by 5 percent or
more in the late 1950s, is now inconsequential.
next six figures show the first and second dimension means for the political
parties in the House and Senate over the 1937 to 1998 period (75th
Congress through the 105th Congress). These are W-NOMINATE
coordinates adjusted so that the House and Senate coordinates are comparable.
a Basic Space From a Set of Issue Scales for an explantion of how
these coordinates were produced.)
The graph below shows that the chamber means of the House and Senate on the first basic dimension track one another fairly closely (note that the vertical scale of this graph is different than the two above). The Senate mean is to the left of the House mean during the 1960s and 1970s but before and after the roles reverse. Viewed over a long period of time, there is no pat answer to the question: "is the Senate more liberal than the House." It depends upon the time period.
The graph below shows the locations of Presidents Eisenhower to Clinton along with the chamber means of the House and Senate on the first basic dimension (note that the vertical and horizontal scales of this graph are different than the three above). The Presidents are scaled by using their announced positions on CQ's Presidential Support Roll Calls. Hence, they are treated as members of both the House and Senate albeit members who "miss" a lot of roll call votes.