The herd is now complete.

(The Hill) — Five Republican senators jumped ship and voted against House Republicans’ 2012 budget on Wednesday.

Sen. Lisa Murkowski (R-Alaska) joined four other Republican senators who’d previously announced their opposition to the budget, which has sustained withering criticism by Democrats who say it would end Medicare as Americans currently know it.

Sens. Scott Brown (R-Mass.), Susan Collins (R-Maine) and Olympia Snowe (R-Maine) voted against it as they’d previously said they would, largely because of the reforms contained within the budget to Medicare, transforming it into a voucher-based system for Americans under the age of 55.

Sen. Rand Paul (R-Ky.) also voted, as expected, against the plan because he views it as not going far enough.