BREAKING: Grassley to serve as president pro tempore presiding over the Senate tomorrow during debate

Per Roll Call:

NEW: Iowa Sen. Charles E. Grassley, the Senate president pro tempore, says he and not Vice President Mike Pence will preside over the certification of Electoral College votes, since “we don’t expect him to be there.”

Grassley said he will listen to debate and that “it would be really wrong for me to say I have my mind made up.”

Grassley’s office clarifies that he was meaning to explain what would happen if Pence had to step away during Wednesday’s proceedings to count Electoral College votes. “Every indication we have is that the vice president will be there,” Grassley’s office said.

Grassley himself tweeted “On a weekly press call with ag reporters, @ChuckGrassley discussed his role as president pro tempore presiding over the Senate tomorrow during expected electoral college certification debate when @VP isn’t present. KEY WORDS: SENATE DEBATE”