, the University of Chicago Press estimated that more than 350,000 copies of "The Road to Serfdom" have been sold. It appears on Martin Seymour-Smith's list of the "100 Most Influential Books Ever Written", and it made number 1 on Human Events: Top Ten Books Every Republican Congressman Should Read in 2006. It was influential enough to warrant mention during the 1945 British general election, when according to Harold Macmillan, Winston Churchill was "fortified in his apprehensions a Labour government by reading Professor Hayek's "The Road to Serfdom"" when he warned in an election broadcast in 1945 that a socialist system would "have to fall back on some form of Gestapo". The Labour leader Clement Attlee responded in his election broadcast by claiming that what Churchill had said was the "second-hand version of the academic views of an Austrian professor, Friedrich August von Hayek". The Conservative Central Office sacrificed 1.5 tons of their precious paper ration allocated for the 1945 election so that more copies of "The Road to Serfdom" could be printed, although to no avail, as Labour won a landslide victory.