Sen. Charles Grassley (R-Iowa) talks with reporters Nov. 21 on Capitol Hill. (Chip Somodevilla/Getty Images)

Sen. Charles Grassley (R-Iowa) said Thursday on the Senate floor that Republicans will likely expand the new rule change made by Senate Democrats to allow for Supreme Court nominees to also be confirmed by a majority vote.

The rule change, which requires only a majority vote rather than 60 votes, for now only applies to judicial nominees beneath the Supreme Court level, as well as executive-branch nominees.