Means every senator and member of Congress will have to take a vote on whether to affirm the results of specific states.

(McConnell had hoped to avoid putting his senators in that position.) https://twitter.com/HawleyMO/status/1344307458085412867

Hawley references Democrats' challenge of Bush's win in in 2005.

Sen. Barbara Boxer was the lone senator supporting the challenge (disputing Ohio). The entire rest of the chamber voted against it, 74-1.

Will probably not be so lopsided this time

https://www.nytimes.com/2005/01/07/politics/congress-ratifies-bush-victory-after-challenge.html

Meanwhile in 2017, some Democratic House members tried to object to Trump's win, but no senators would join them. So no vote was held.

Should note that yet again this is a stunt rather than something that will genuinely flip the outcome. It would take majority votes in both the new House and new Senate to reject a state's results. Not happening — Dems control the House.

The challenge will also likely fail in the (R-controlled while waiting for Georgia's results to be finalized) Senate, because several Senate Rs have recognized Biden's win.

But even if Senate approved it, it would have no impact unless D-controlled House went along too.