The Dover district is divided into two areas, known as parliamentary constituencies, each of which elects a Member of Parliament (or MP) to represent the people of their constituency in the House of Commons at Westminster. These are the Dover Constituency and the South Thanet Constituency.
You can find the details of your local MP on the website of the UK Parliament. This also includes a post code based search function if you are unsure as to which constituency you are in.
Member of Parliament for the Dover Constituency
Member of Parliament for the South Thanet Constituency