When the general election comes, we don't actually vote for a government. Instead, we vote to decide which MP should represent our constituency.
The United Kingdom has 650 Parliamentary constituencies.
If any party gets a majority of the MPs - that's 326 or more - then they will form the government.
If none of the parties get that many then whoever wins the most will probably form the government.
So on December 12, you're voting for who should be your local MP.
And for some people, that's important.
They may feel that one of the local candidates is particularly good (or bad), regardless of which party they belong to.
Some voters also like to know who came first and second in their constituency in the last election.
That might affect the way they vote this time.
But if any of those things are important to you, the first thing you need to know is which constituency you are actually in.
Just enter your postcode in the box below and we will find out your constituency.
We'll also show you some useful information about it.
