The Senate has voted against opening the Arctic National Wildlife Refuge to drilling by a 52-48 vote, largely along party lines. California Democrat Barbara Boxer celebrated the vote, calling it a “a huge setback” for the Republicans’ agenda. Just before the vote began, Alaska senator Ted Stevens bluntly warned the Senate: “People who vote against this today are voting against me and I will not forget it.” As chair of the Senate Appropriations Committee, Stevens holds significant power, yet senators were apparently not swayed by this threat.