Mhairi Black (born 12 September 1994) is a Scottish politician. She has been the Member of Parliament for Paisley and Renfrewshire South since 2015, when she defeated Labour Shadow Foreign Secretary Douglas Alexander.
Black is the current Baby of the House as the youngest member in the House of Commons of the United Kingdom. When elected in May 2015, she was 20 years and 237 days old, making her the youngest MP elected to the House of Commons of the United Kingdom since at least the Reform Act of 1832, replacing James Dickson who was 21 years and 67 days old when elected in 1880.
“Tony Benn once said that in politics there are weathercocks and signposts. Weathercocks will spin in whatever direction the wind of public opinion may blow them, no matter what principle they have to compromise. And then there are signposts, which stand true and tall and principled. They point in one direction and they say, “This is the way to a better society and it is my job to convince you why.” Tony Benn was right when he said that the only people worth remembering in politics were the signposts”. – Mhairi Black, maiden speech to House of Commons, 14 July 2015.