Nigeria is democratic state with a presidential system of of government theoretically.while  in practice,it is unitary state with autocratic system of government.
  Nigeria, can't be called a democratic nation, while none of the pillers of of democracy are not followed.
1_some individuals are above the law, which alter it's supremacy.
2_The people mandate is not heard.
3_The president has too much veto power,he control both the the judiciary and legislature
4_There is not check and balance
5_ Two party system in practice,PDP and APC are one in practice and the remaining parties are one.north vs the rest of Nigeria
6_protection of the lives and properties of the masses is not longer a function of the government
6_curruption is legalized in practice
7_fusion of power, the president is vice president,inec chairman, chief justice of the federation, the ministers,Senate president, controlling the military etc.becaise he put them there.
8_The constitution is not supreme and flexible
9_devision of the country through ethnicity, tribalism, religious line
10_Detachment of the masses from political activities in the country.
    Therefore, Nigeria practice democracy on paper not practically