This chapter will look at how the Second World War influenced the 1946 census. It will then discuss why 1948 became a pivotal year in Irish politics, especially analysing how Éire’s transformation into a republic created international repercussions and how the Protestant community reacted to this. Events would reveal a divide between Southern Irish Protestants and create a crisis for the Church of Ireland in terms of how it conducted its state prayers. This will be followed by examining the establishment of the Donegal Ratepayers’ Association and why border Protestants felt it was under siege during the IRA’s border campaign in 1956 and during the debate to remove STV in 1958. The chapter will investigate how the border campaign and the debate on STV affected community relations and Protestant emigration in these counties, as it attempts to understand the social issues that affected certain elections and political campaigns during this period in Ireland. The chapter concludes with the 1957 general election, investigating why this was the last time the Protestant Associations of Cavan, Donegal and Monaghan stood their own candidates as a result of the Electoral (Amendment) Act, 1961.