When the creation of the New Zealand Parliament was announced, Weld stood for election. He became a member of the 1st Parliament as the representative of Wairau, an electorate in the northeast of the South Island; he was declared elected unopposed. The main political division of the day was between "centralists" (favouring a strong central government) and "provincialists" (favouring strong regional governments). On this spectrum, Weld established himself as a moderate centralist, although he tended to oppose the extremes of either side.