You need to look carefully here. The ONLY ones who have raised the specter of him resigning from his Senate seat are his defenders.
The last thing those here who want him out of the Majority Leadership want is that...it would do nothing but empower Daschle, and is totally unneccessary.
After all, the Senate isn't going to expel him, and his constituents in MS sure aren't going to toss him from office for any of this. He'll probably win reelection with 70% of the vote.