One thing that Marxists do well is gather and analyse data.
This is because is an imperical study of history and economics.
Both of you should learn this skill if you wish to win arguments.
In 1928, the Nazi share of the vote was a miserly 2.6 %.
" From 1925 to 1927, the Nazi Party failed to make inroads in the cities and in May 1928, it did poorly in the Reichstag elections, winning only 2.6% of the total vote.
The Party shifted its strategy to rural and small town areas and fueled antisemitism by calling for expropriation of Jewish agricultural property and by condemning large Jewish department stores. Party propaganda proved effective at winning over university students, veterans' organizations, and professional groups, although the Party became increasingly identified with young men of the lower middle classes.
1929
The Great Depression began in 1929 and wrought worldwide economic, social, and psychological consequences. The Weimar democracy proved unable to cope with national despair as unemployment doubled from three million to six million, or one in three, by 1932. The existing "Great Coalition" government, a combination of left-wing and conservative parties, collapsed while arguing about the rising cost of unemployment benefits.
Reich president Paul von Hindenburg's advisers persuaded him to invoke the constitution's emergency presidential powers. These powers allowed the president to restore law and order in a crisis. Hindenburg created a new government, made up of a chancellor and cabinet ministers, to rule by emergency decrees instead of by laws passed by the Reichstag. So began the demise of the Weimar democracy.
Heinrich Brüning was the first chancellor under the new presidential system. He was unable to unify the government, and in September 1930, there were new elections. The Nazi Party won an important victory, capturing 18.3% of the vote to make it the second largest party in the Reichstag..."
http://fcit.usf.edu/HOLOCAUST/timeline/nazirise.htm
"...The Nazis contested elections to the national parliament, the Reichstag, and to the state legislatures, the Landtags, from 1924, although at first with little success. The "National-Socialist Freedom Movement" polled 3% of the vote in the December 1924 Reichstag elections, and this fell to 2.6% in 1928. State elections produced similar results. Despite these poor results, and despite Germany's relative political stability and prosperity during the later 1920s, the Nazi Party continued to grow. This was partly because Hitler, who had no administrative ability, left the party organization to the head of the secretariat, Philipp Bouhler, the party treasurer Franz Xaver Schwarz and business manager Max Amann. The party had a capable propaganda head in Gregor Strasser, who was promoted to national organizational leader in January 1928. These men gave the party efficient recruitment and organizational structures. The party also owed its growth to the gradual fading away of competitor nationalist groups, such as the DNVP. As Hitler became the recognized head of the German nationalists, other groups declined or were absorbed.
The party expanded in the 1920s beyond its Bavarian base. Catholic Bavaria maintained its right-wing ennui for a Catholic monarch, and Westphalia, along with working-class "Red Berlin", were always the Nazis' weakest areas electorally, and even during the Third Reich itself. The areas of strongest Nazi support were in rural Protestant areas, such as Schleswig-Holstein, Mecklenburg, Pomerania and East Prussia. Depressed working-class areas such as Thuringia also gave a strong Nazi vote, while the workers of the Ruhr and Hamburg largely remained loyal to the SPD, the KPD or the Catholic Centre Party. Nuremberg remained a party stronghold, and the first Nuremberg Rally was held there in 1927. These rallies soon became massive displays of Nazi paramilitary power, and attracted many recruits. The Nazis' strongest appeal was to the lower middle-class – farmers, public servants, teachers, small businessmen – who had suffered most from the inflation of the 1920s and who feared Bolshevism more than anything else. The small business class were receptive to Hitler's anti-Semitism, since they blamed Jewish big business for their economic problems. University students, disappointed at being too young to have served in World War I and attracted by the Nazis' radical rhetoric, also became a strong Nazi constituency. By 1929 the party had 130,000 members.[36]
Despite these strengths, the Nazi Party might never have come to power had it not been for the Great Depression and its effects on Germany. By 1930 the German economy was beset with mass unemployment and widespread business failures. The SPD and the KPD parties were bitterly divided and unable to formulate an effective solution; this gave the Nazis their opportunity, and Hitler's message, blaming the crisis on the Jewish financiers and the Bolsheviks resonated with wide sections of the electorate. At the September 1930 Reichstag elections the Nazis won 18.3% of the vote and became the second-largest party in the Reichstag after the SPD. Hitler proved to be a highly effective campaigner, pioneering the use of radio and aircraft for this purpose. His dismissal of Strasser and appointment of Goebbels as the party's propaganda chief was a major factor. While Strasser had used his position to promote his own version of national socialism, Goebbels was totally loyal to Hitler and worked only to burnish Hitler's image.
The 1930 elections changed the German political landscape by weakening the traditional nationalist parties, the DNVP and the DVP, leaving the Nazis as the chief alternative to the discredited SPD and the Zentrum, whose leader, Heinrich Brüning, headed a weak minority government. The inability of the democratic parties to form a united front, the self-imposed isolation of the KPD and the continued decline of the economy all played into Hitler's hands. He now came to be seen as de facto leader of the opposition, and donations poured into the Nazi Party's coffers. Some major business figures such as Fritz Thyssen were Nazi supporters and gave generously,[37] but many other businessmen were suspicious of the extreme nationalist tendencies of the Nazis and preferred to support the traditional conservative parties instead.[38]
http://en.wikipedia.org/wiki/Nazi_Party
Comrade Stalin