These are key wavering Republican Senators about the ACA:

• Senator Bob Corker - (202) 224-3344

• Senator Lisa Murkowski - (202) 224-6665

• Senator Rob Portman - (202) 224-3353

• Senator Susan Collins, Maine - (202) 224-2523

• Senator Bill Cassidy - (202) 224-5824

You may not be able to get through on these lines - reports they are overwhelmed. Call the Senate switchboard (above) and ask for them by name.