It's Time (New Zealand campaign)
It's Time was a successful political campaign run by the New Zealand Labour Party under Norman Kirk at the 1972 general election. The Labour Party promoted its initiatives with advertisements featuring the lines "It's time for a change, it's time for Labour." The campaign was ultimately successful and marked the first time Labour was in government since losing the 1960 election to the National Party.
Source: Wikipedia — It's Time (New Zealand campaign) (CC BY-SA 4.0)