Explain Who has power in contemporary democracies?

Keep this in mind when writing my essay:
? the logical development of the answer;
? the essays insight and originality;
? the degree of critical analysis;
? the range and use of sources;
? the appropriate use of evidence;
? the presentation of references;
? the quality of the written English, including spelling, grammar, punctuation and
style or readability.
My university is really strict so please make sure there is no plagiarism because i will be in deep trouble.
Make sure to use credible and liable sources such as books,journals, newspapers. DO BOT USE BLOGS OR CITES WITH.ORG AT THE END.
I WANT MY WORK TO BE CITED EACH TIME INFORMATION IS USED FROM A SOURCE. PLEASE CITE IT AT THE END OF THE SENTENCE. AND ALSO
WRITE THE BIBLIOGRAPHY AT THE END.

Thank you