1. Introduction.- 2. Theoretical and Structural Issues in Nigerian Politics.- 3. Continuity and Change in Nigeria's Electoral Democracy.- 4. Party System and the Dominance of the People's Democratic Party, 1999-2015.- 5. Trends in Voter Behaviour, 1999-2015.- 6. Trends in Election Outcomes, 1999-2015.- 7. Democratic Governance and Political Accountability, 1999-2014.- 8. Electoral Reform and Electoral Administration, 1999-2015.- 9. Party Politics...