Senator Harry Reid, the feisty Democratic leader from Nevada, will deliver his final speech to a party convention as an elected official on Wednesday; he is retiring from the Senate next year.
In his remarks, Mr. Reid is expected to hit on one of his favorite topics: how the tactics and ideology of conservative congressional Republicans helped create a political environment that led to the nomination of Donald J. Trump for president.
But before Mr. Reid takes the stage to lacerate his political opponents, a few people who have worked closely with him will share their thoughts about the leader via a three-minute video created for the convention.
