Weaknesses in the Weimar constitution were not the most important factor for hitler’s rise to power; these weaknesses consisted of proportional representation and article 48, and these were present in the time when the Nazis only had 3%. The Depression and violence were the two most important factors, the depression brought support to two extremist parties, the Nazis and the KPD, and violence ensured that it was the Nazis who got the majority and therefore caused Hitler’s rise to power.