Welcome to The Tip Sheet, a daily political analysis of the 2018 elections, based on interviews with Republican and Democratic officials, pollsters, strategists and voters.

Oprah hits the campaign trail

MARIETTA, Ga. — The chant began well before Oprah Winfrey arrived on Thursday: “And you get a vote! And you get a vote! And you get a vote!”

Ms. Winfrey eventually joined in the cheer, with its origins in her days as a talk-show host — but only after she delivered a pointed rebuke to people who might willfully forego the franchise and a stirring evocation of her native South’s racist past.

“I’m here today because of the men and because of the women who were lynched, who were humiliated, who were discriminated against, who were suppressed, who were repressed and who were oppressed for the right of equality at the polls,” Ms. Winfrey said as she visited Georgia on behalf of Stacey Abrams, the Democratic candidate for governor. “Their blood has seeped into my DNA, and I refuse to let their sacrifices be in vain.”