ANALYSIS: On Attack, Hillary Clinton Regains Control of Democratic Race

The Democratic race for president was Hillary Clinton’s at the start.

Clinton used the first debate of the campaign to reaffirm control against four challengers who struggled to and sometimes outright refused to bring the fight to her. She delivered a feisty, aggressive performance that flipped the expected script: Rather than take the barbs, she dished them out.

But more significant was what happened in the other direction.

“The American people are sick and tired of hearing about your damn emails,” Sanders yelled. He earned a broad smile and a handshake of thanks from Clinton, in addition to a standing ovation from the audience.

She didn’t have to respond Tuesday night, as she dominated the four men who flanked her on stage.

Clinton’s performance underscored her strengths, in particular her campaign-tested toughness. For the night –- and it might not last longer than that, to the chagrin of Democrats -– it also obscured her still-considerable weaknesses.

To some extent, Clinton has always been running against herself –- her own backstory, contradictions, and shortcomings. The first debate was a big step toward Clinton reclaiming that history for this race.

Sanders -– who has drawn huge crowds and big dollars to his progressive cause –- helped Clinton find a groove, in both his refusal to outright attack, and his role as a foil.

Sanders was Sanders, barely deviating from a script that’s gotten him farther than almost anyone expected he could get. He may not have intended to do Clinton a favor on her emails, though it might have had that effect.

Then, of course, there was the matter of the podium that didn’t need to be delivered to the stage. It was hard at times to identify a lane that Biden would fill, with Clinton in control.

But it will be just as hard for some Democrats to watch the primaries slip by without someone seeking to become a viable alternative to Clinton. Tuesday brought a strong performance by an experienced candidate, but it can’t and won’t be the last time she’s tested on stage.

“I am in the middle here – lots of things coming from all directions,” Clinton said at one point, knowing that new angles are still possible in the Democratic race.