Its last MP was Jenny Shipley , who went on to become Prime Minister .
By the time of the second Ashburton electorate , rural New Zealand was largely united behind the National Party , which held Ashburton for the whole of its second and third incarnations .
Ashburton 's last MP was Jenny Shipley , who went on to become Prime Minister .
By the time of the second Ashburton electorate , rural New Zealand was largely united behind the National Party , which held Ashburton for the whole of its second and third incarnations .