ORLANDO, Fla. (AP) — Randolph Bracy and LaVon Bracy Davis are taking sibling rivalry to a new level as the brother and sister run against each other in a race for a Florida state Senate seat on Tuesday.

Not only that, one of their opponents for the Democratic nomination in the district representing parts of metro Orlando is Alan Grayson, a combative former Democratic U.S. congressman who drew national attention in 2009 when he said in a House floor speech that the Republican health care plan was to “die quickly.”

The headline-grabbing candidates are running in the special primary election for the seat that had been held by Geraldine Thompson, a trailblazing veteran lawmaker who died earlier this year following complications from knee-replacement surgery. A fourth candidate is also running in the Democratic primary — personal injury attorney Coretta Anthony-Smith.

The winner will face Republican Willie Montague in September for the general election in the Democratic-dominant district. Black voters make up more than half of the registered Democrats in the district.

Both siblings have experience in the state legislature. Bracy Davis was a state representative, and Bracy was a former state senator. Adding to the family dynamics was the fact that the siblings’ mother, civil rights activist Lavon Wright Bracy, was the maid of honor at Thompson’s wedding and was one of her oldest friends. She has endorsed her daughter over her son.

The siblings’ family has been active in Orlando’s civic life for decades. Their father, Randolph Bracy Jr., was a local NAACP president, a founder of a Baptist church in Orlando and director of the religion department at Bethune-Cookman University.

It wasn’t the first time the family has been caught up in competing endorsements. When Bracy and Thompson ran against each other for the Democratic primary in a state senate race last year, Bracy Davis endorsed Thompson over her brother. Campaign fliers sent out recently by a Republican political operative start with “Bracy Yourself!”

Bracy, 48, who one time played professional basketball in Turkey, told the Orlando Sentinel that it was “disappointing and hurtful” for his sister to run after he had announced his bid. But Bracy Davis, 45, an attorney by training, said she was running for the people in state Senate District 15, not against any of the other candidates. She said that she intended to continue Thompson’s legacy of pushing for voters’ rights and increasing pay for public schoolteachers. Thompson’s family has endorsed Bracy Davis.

Grayson was elected to Congress in 2008 and voted out in 2010. Voters sent him back to Congress in 2012, but he gave up his seat for an unsuccessful 2016 Senate run