The debate, hosted by Fox Business Network, will be held from 9 to 11 p.m. Eastern time on Wednesday night at the Ronald Reagan Presidential Library in Simi Valley, Calif.
The Republican National Committee announced the lineup Monday night: Doug Burgum, Chris Christie, Ron DeSantis, Nikki Haley, Mike Pence, Vivek Ramaswamy and Tim Scott.
Several recent surveys, nationally and in early-voting states, undermine the governor’s argument that the primary is a two-way race between him and former President Donald J. Trump.
The former Texas congressman’s plan takes an expansive view of both the potential and the risks of artificial intelligence, calling for it to be used more widely but also tightly regulated.
Mr. Scott, when asked if he would involve himself in the United Auto Workers dispute as president, took a harsher stance than other Republican candidates.
The hedge fund billionaire Kenneth Griffin supported Gov. Ron DeSantis’s campaign in Florida last year, but has not backed a Republican for president.
Nine California legislators asked the state’s attorney general to seek a court opinion on whether former President Donald J. Trump is disqualified from office under the 14th Amendment.
The amendment says anyone who “engaged in insurrection or rebellion” against the Constitution after taking an oath to defend it is ineligible to hold office, and a long-shot effort to employ it is growing.
Mr. Rogers, who once led the House Intelligence Committee, is the most prominent Republican so far in the race to replace Senator Debbie Stabenow, a Democrat who is retiring.
Mark Gonzalez, facing a conservative effort to remove him from the district attorney’s office in Nueces County, Texas, resigned and announced his campaign for the Senate.