The normally perfunctory joint session of Congress in which both chambers certify the Electoral College results will be anything but, as a dozen Republican senators on Wednesday plan to object to President-elect Joe Biden’s victory.

Sen. Josh Hawley, a Republican from Missouri, was the first senator to announce he’d object. His announcement, which came last Wednesday, was an important domino to fall because an objection can only be heard during this joint session if it’s in writing and signed by a member of both chambers of Congress.