John G. Roberts, Jr.
In October Term 2014, a single noisy term, Roberts voted with the majority in 64% of divided cases and 78% of all cases. The comparison is the other justices on that bench.
Ideology over time
Martin-Quinn score by term against the Court median. Negative is liberal. Scores are relative to the docket. Intervals are not in this file. A single term is noisy.
Table
| series | term | martin_quinn |
|---|---|---|
| Roberts | 2005 | 1.513 |
| Roberts | 2006 | 1.528 |
| Roberts | 2007 | 1.509 |
| Roberts | 2008 | 1.564 |
| Roberts | 2009 | 1.485 |
| Roberts | 2010 | 1.546 |
| Roberts | 2011 | 1.416 |
| Roberts | 2012 | 1.405 |
| Roberts | 2013 | 1.245 |
| Roberts | 2014 | 1.250 |
| Roberts | 2017 | 0.429 |
| Court median | 2005 | 0.189 |
| Court median | 2006 | 0.413 |
| Court median | 2007 | 0.317 |
| Court median | 2008 | 0.565 |
| Court median | 2009 | 0.572 |
| Court median | 2010 | 0.679 |
| Court median | 2011 | 0.436 |
| Court median | 2012 | -0.373 |
| Court median | 2013 | 0.465 |
| Court median | 2014 | 0.470 |
| Court median | 2017 | -0.590 |
Where Roberts came down, by issue
Share of votes coded liberal. The first-run issue table suppresses cells under 25 votes and does not publish a separate Court rate for this justice. Direction before 1946 is excluded.
Table
| issue | justice_liberal | court_liberal | n |
|---|---|---|---|
| Federalism | 0.703 | 770 | |
| Economic Activity | 0.456 | 770 | |
| First Amendment | 0.450 | 770 | |
| Civil Rights | 0.395 | 770 | |
| Judicial Power | 0.379 | 770 | |
| Criminal Procedure | 0.301 | 770 |
At oral argument stage 3
Words per argument, questions to each side, interruptions given and received, and whether the side questioned more went on to lose. Formats are never pooled.
Source: Oyez speaker turns
Writing style stage 2
Words per opinion, reading grade, citations per thousand words, and the share of case versus statutory citations.
Source: CourtListener opinion text
Reasoning profile stage 6
Which reasoning techniques appear, against the Court average over the same terms. Validation accuracy prints beside the chart.
Source: Taxonomy classifier over opinion text
Before the Court stage 8
Pre-appointment opinions, reversal record and panel agreement.
Source: CourtListener, labeled by coverage