Cass Tech High School will be the spot for a campaign rally Friday with former President Barack Obama and Democratic candidates running for state and federal offices.

Doors at the school, 2501 Second Ave. in Detroit, will open at 5 p.m. Friday and will feature Obama and former U.S. Attorney General Eric Holder, in support of Michigan Democrats running for office, including U.S. Sen. Debbie Stabenow, gubernatorial candidate Gretchen Whitmer and her running mate Garlin Gilchrist, and congressional candidates Haley Stevens, Elissa Slotkin, Gretchen Driskell and Matt Longjohn. Holder's political action committee, the National Democratic Redistricting Committee, also contributed $250,000 to support the anti-gerrymandering proposal on Michigan ballot.

Tickets are free for the event and are available on a first-come, first-serve basis from 4 p.m. to 7 p.m. on Wednesday at Democratic Party offices in Detroit, Grosse Pointe, Livonia, Troy, Southfield, Dearborn, Sterling Heights, Ann Arbor, Pontiac and Flint.

More:Sen. Bernie Sanders to Ann Arbor crowd: Don't repeat 2014 low turnout

More:Whitmer and Schuette trade blows in bare-knuckle Grand Rapids debate

Obama had already endorsed the Democratic candidates after the Aug. 7 primary, but his visit is an effort to ensure that voters actually go to the polls on Nov. 6. His last visit to Michigan was the day before the general election in 2016, when he came to Ann Arbor to campaign for Democratic presidential candidate Hillary Clinton, who ended up losing Michigan by 10,704 votes.

Contact Kathleen Gray: kgray99@freepress.com or on Twitter @michpoligal.