CHICAGO -- Vice President Kamala Harris closes out the Democratic National Convention Thursday night when she accepts her party's historic presidential nomination and seizes one of her few remaining opportunities to appeal to an audience of millions. Harris will lay out her vision for the country and prosecute her case against Republican Donald Trump , capping a whirlwind month that began when President Joe Biden ended his reelection bid and endorsed her to replace him atop the Democratic ticket. Harris has three objectives for her speech, according to a campaign official who spoke on condition of anonymity to discuss sensitive speech preparations.

She'll share her background rising from a middle-class family to protect others as a prosecutor, contrast her “optimistic” vision with Trump's “dark” agenda and evoke a sense of patriotism, the official said. Harris spoke briefly to the convention on Monday, when she thanked Biden and celebrated his record as president, and again on Tuesday , when the beginning of her rally in Milwaukee was streamed into the convention hall after Democrats reaffirmed their nomination of her with a state-by-state roll call. Among others who will speak before Harris on Thursday are Michigan Gov.

Gretchen Whitmer, North Carolina Gov. Roy Cooper, civil rights leader Al Sharpton and Randi Weingarten, president of the American Federation of Teachers. The singer Pink also will perform.

Harris will be the first Black woman and the first person of S.