The GOP already faces a difficult Senate map in 2022, when 14 Democratic-held seats and 20 Republican ones will be on the ballot.
That includes at least two open seats that Republicans will be defending because of the retirements of GOP Sens.
One of those lawmakers, Florida Sen. Rick Scott, is the new chair of the National Republican Senatorial Committee, a post that makes him the public face of the Senate Republican fundraising efforts.
But two senior Republican strategists involved in Senate races say the cumulative effect of the companies' decisions could have a bigger impact.
That puts more pressure on the NRSC and the leading Senate Republican outside group, Senate Leadership Fund, to cover the difference.