Why Pelosi and Democratic presidential candidates don’t agree on impeachment

Democratic leaders are split on how to handle impeachment. House Speaker Nancy Pelosi has called for Democrats to continue investigating President Donald Trump, but has not said an impeachment inquiry should begin. Many of the Democrats running for president are going in a different direction. Led by Sen. Elizabeth Warren […] Read more »

The Supreme Court is deciding a gerrymandering case. Here’s the social science that the justices need to know.

… One key question before the Supreme Court is whether there are standards to detect an extreme partisan gerrymander. During oral arguments this year, Justice Samuel A. Alito Jr. asked, “How do you determine whether [a particular plan] is constitutional?” In fact, the five federal courts that have struck down […] Read more »