President Trump’s trip comes after a two-day Republican rally in Dallas, where he tried to energize voters amid fears that the party could face losses in the midterms. More

What is democracy, and is it in crisis? More

Shane Goldmacher, one of our national political correspondents, looks at the Republican candidates who spoke this week at their party’s unusual midterm convention, called a “Trumpapalooza.” Some other vulnerable candidates avoided it because of President Trump’s unpopularity. More

The legal wrangling over a congressional map redrawn by Republicans has election officials, candidates and voters scrambling before November. More

Stark warnings from A.I. researchers have reverberated across the country. More