office the political climate had changed and Labour fielded a candidate against Oliver at the general election. This helped ensure the Unionist regained the seat; By the time of the 1929 General Election, Oliver and the Manchester Liberals were at the forefront of the party's radical platform, and despite the presence of a Labour candidate, he was able to re-gain his Blackley seat from the Unionist; In 1931, following the financial crisis that resulted in the Labour government being replaced by an all-party National Government, Oliver supported the leadership of Sir Herbert Samuel, who had led the Liberal party into the National Government. At the following general election, the Conservatives in Manchester chose to split the National Government vote by standing against sitting Liberal MPs. One of the main issues of the election was Free trade v Import tariffs, as had been the case in 1923. However, unlike then, the Labour party in Manchester chose to split the free trade vote and Oliver thus found himself in a three-way contest and lost his seat; In 1933 he was parachuted in to be the Liberal candidate at the 1933 Altrincham by-election. This was a Conservative seat that the Liberals had last won in 1923. At the 1931 General Election the Altrincham Liberals had decided not to split the National Government vote and the Conservative was returned unopposed. Nationally, the Liberals had resigned their offices in the National Government but continued to sit on the government benches. At a difficult time for the party, Oliver was able to retain the party position and share of the vote when compared to the 1929 election figures; In 1933 he had published Genesis to Geneva, an essay. By 1935, the Liberal party had moved into opposition to the National Government and Oliver fought the election in direct opposition to his Conservative opponent. However, the Labour party again chose to stand, splitting the anti-government vote and allowing the Conservative to win again; In 1936 he was elected to serve on the Liberal Party Council. In 1939 Oliver had been re-selected as Liberal prospective parliamentary candidate for Blackley. A general election was expected to take place sometime in 1939 and there was some support in the Labour party, not to oppose Liberal candidates who were better placed to defeat Conservative candidates. This feeling was in line with Sir Stafford Cripps advocating a Popular Front to defeat the