It was the 90th anniversary this week of the achievement of women's suffrage in the United States. On 18 August 1920 Tennessee became the 36th state to ratify the 19th Amendment – ‘The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any State on account of sex’ – and it passed into law. For those who remember how the Equal Rights Amendment was defeated in the 1970s thanks to die-hard Republican opposition, it may come as a surprise to realise how much women's suffrage was a Republican achievement.


