The paper is an empirical study on collaboration between European Union and Nigeria’s democratic institutions. Anchoring the study on the liberal democratic theory, the target population for this study comprises all the principal officers of an international organisation; government agencies; non-governmental organisations and political parties. A sample of 200 respondents was selected using the purposive sampling technique. Utilizing secondary and primary data, the study tested three hypothetical assumptions. Analysis done through simple percentages, frequency distribution tables and chi-square (x2) statistical test reveals the study found out that the Europeans Union has a strong collaborative effort with the Nigeria’s democratic institutions. It further revealed that the collaboration between the EU and Nigeria’s democratic institutions is a significant factor to be considered in consolidating Nigeria democracy. It is shown that the European Union is effective in strengthening the capacity of democratic institutions.  The study concluded that the democratic collaboration of the EU has influenced democratic institutions positively in the Nigeria.