Complex sentence: Lord Pearson resigned as leader in August 2010, and Farage was re-elected against Professor Tim Congdon, David Bannerman and Winston McKenzie with more than 60% of the vote.
Split into simpler sentences: Lord Pearson resigned as leader in August 2010. The subsequent leadership election was contested between Nigel Farage, Tim Congdon, David Bannerman and Winston McKenzie and won by Farage with more than 60% of the vote.