The purpose of this essay is to investigate to which extent two Swedish political parties, founded in the early 1900s, represents changes in public opinion. The question of issue to be answered is to which extent the Social Democrats and the Moderates represents their former voters´ opinions. The question of issue will be investigated throughout a comparison of party politics and public opinion in 2014 and 2018, the years Sweden had parliamentary elections. The analysis was performed by applying the GAL-TAN and left-right division on these data. The results shows how there has been a change in politics between these years among both the parties and voters. The change in public opinion is reflected in party politics in areas such as immigration and law and order but there are parts of politics that is considered irrelevant for how the voters choose to vote. The Social Democrats and Moderates are capable of representing changes in public opinion to some extent.