Chicken and egg problem in voting

Lack of voters in certain demographics can cause parties to ignore that demographic, especially if it's very difficult to persuade them to vote. 
But how can we combat this problem were parties don't make policies for certain groups of people because it's difficult to get them to vote and they don't want to vote as politician don't represent those people?

I'm not against forcing people to vote but that seems like its dealing with the consequences of voter apathy and not the cause of it.
So what can we try to try and get people to vote? 

• Allow major political issues to be explained in depth on TV similar to shows on radio 4, to give more people the chance to understand more complex political stances and ideas.

• Could the electoral commission force bigger parties to spend a proportion of their money encouraging certain low voting demographics to vote

• Could forcing first time voters to vote encourage parties to aim polices at these people giving them a reason to vote and see that follow through to other elections, or if you saw a high percentage of people not voting in their second election, would it lead to policies aimed at first time voters and ignoring people after that?

Uneducated electorate
The quality of voting is just as important as getting more people to vote, does forcing or encouraging people to vote encouraging them to understand the policies as well, or could it lead to a worse political environment overall?