One prospective Cabinet minister appears to have learned from his predecessor's mistakes.

Senior National MP Chris Bishop has sold his shares in Kiwi Income Property and plans to sell off his further shares in Paysauce Ltd, Telstra and Parrotdog.

Former National MP Steven Joyce disagrees that ministers should have to sell their shares once they get into office.

"You keep lifting the bar higher and higher in terms of what people can't do while they're a politician- which makes it less attractive for people. In principle- the Cabinet manual makes it clear people can do things in their private capacity."

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