After the defeat of the McMahon government in 1972, Withers became Opposition Leader in the Senate, where he retained a thin majority and acted to block much of the Whitlam Government's legislation.
Senator Rt Hon Reg Withers: Minister for Administrative Services, Vice-President of the Executive Council (to 7 August 1978)
Bill Withers | Reg Livermore | Reg Grundy | Frederick Clarke Withers | Reg Varney | Reg Mombassa | Jane Withers | Hildegarde Withers | Gentleman Reg | Reg Perks | Pick Withers | Jimmy Campbell and Reg Connelly | Googie Withers | Withers Stakes | Reg Sprigg | Reg Race | Reg Pridmore | Reg Pollard | Reg Gorman | Reg Evans | Reg Butler | Augusta Innes Withers | ''S. drummondii'' illustration by Augusta Innes Withers | Reg Withers | Reg Wilson | Reg Weaver | Reg Strikes Back | Reg Smith | Reg Presley | Reg Pratt |