What is the primary goal of political parties?

Different parties represent different elements on the political spectrum - there are progressive parties (who typically support a less directly capitalistic style or a directly socialist society and forward thinking policy) and conservative parties (who are generally in favour of a more capitalistic style of government and traditional policy decisions. You could say Progressive = change, Conservative = Stasis/non-change. 

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Economic success prussia had a very strong economy, partly due to the success of the zollverein. stronger prussian army king wilhelm wanted to build a bigger, stronger army but was blocked by the prussian landtag (parliament).-credits to google for putting answer -credits to slideshare for making answer-credits to me for putting answer on brain.ly