Complex sentence: He scorned the likelihood that the new party could switch the allegiance of the working class from sport to politics; he did, however, persuade the conference to adopt resolutions abolishing indirect taxation, and taxing unearned income "to extinction".
Split into simpler sentences: He scorned the likelihood that the new party could switch the allegiance of the working class from sport to politics. He did, however, persuade the conference to adopt resolutions abolishing indirect taxation, and taxing unearned income "to extinction".