Motivation: International donors piloted social cash transfers in Africa in the 2000s. Successful pilots need to be expanded, to be nationally owned, and to be funded by regular budgets. How this may be done depends on domestic politics, which vary by country. Donors need to engage with local politics if they wish their pilots to be institutionalized. Malawi is one such case, where a change of president opened a window for policy reforms. Purpose: Why were donors, over six years, unable to persuade Bingu wa Mutharika's government of Malawi to adopt social cash transfers; but succeeded with Joyce Banda's administration within two months of her being in office? Methods and approach: I adopt John Kingdon's multiple streams framework, originally developed in 1984 to explain how agenda are set in the USA. He observed separate streams of problems, potential policy responses, and politics which may converge at critical juncturespolicy windows-when new policies may be adopted. I interviewed 25 policy-makers in Malawi, including political leaders, donor staff, government civil servants, and civil society officers to trace policy-making for social cash transfers. Findings: Malawi can be seen to have a super-presidential system, in which presidents and their closest allies overwhelmingly set the agenda, aligned to their ideological views and political interests. When presidents change, a policy window opens. Mutharika prioritized increasing the maize harvest and stabilizing the economy. The input subsidies used to achieve the former, he saw as "home-grown" solutions, were preferred to donor orthodoxies. Social protection was for him another donor orthodoxy. It did not align with his beliefs and conflicted with his interests in food security. When Mutharika died suddenly in 2012, Vice-President Banda took over. Her experience was different to that of her predecessor: she had worked with civil society, was acutely aware of poverty, and had good relations with external non-governmental organizations and donors. She saw priorities in rising vulnerability and exclusion, she favoured safety nets, and was anxious to gain support for her administration. Social protection came rapidly into favour, pilots were expanded into a national programme. Policy implications: Political leaders support programmes that benefit both development and political survival. Understanding how a brief