President Trump has so effectively interjected himself into the Democratic primary that even Saturday Night Live could not lampoon the party’s White House contenders without imagining the commander in chief crashing one of their debates, as happened recently when the television program satirized the campaign.

The leading Democratic candidates for months have fought among themselves for the right to challenge Trump in November. But whether via social media, campaign rallies, or barging in on Democratic campaign events, the president, along with allies and supporters, has found myriad ways to borrow, if not outright steal, the political spotlight.