If Thompson's bill was worth supporting before, then his bill should still be worth supporting after annoying e-mails, spam or for all I care: murder.
Clearly you don't understand how the Senate works. Bills need support to pass, regarldess of their content. People make deals to support each other's bills. Having friends in your court is crucial if you want to get anything passed. Is this right? Maybe not, but that's how it is, and it's not exactly a secret.
For more information, I suggest reading Fight Club Politics, available at your local library.