I’ll limit this to a quick blurb and some links.
As I had previously stated, it is not too late to contact your Senators. While things don’t look great in the senate, there are still indications that several Senators may vote no on the second cloture. The key Senators to contact (yes it is important to contact them even if they are not your Senator):
Gregg (R-NH) email
Nelson of Nebraska (D)
Webb (D-VA) – scroll down for phone numbers (on right side)
Bond (R-MO) – Ph. 202-224-5721 Fax 202-224-8149 (alternate ph: (816)471-7141)
Coleman (R-MN) email
John Ensign (R-NV) (Added 6/27)
Finally, for RNC donors, now would be a good time to give them a call with a request they might understand.