Note: There are a lot of words in this entry, so here's the short version:
Ok, here's what happens after the November Putsch. Immediately after the Putsch is put down, Goebbels (essentially the leader of the Nazi Party with Hitler still sitting at Landsberg) realizes this is the Nazis' chance to get ahead. So he organizes a "special edition" of the Nazi Party's official newspaper, the Völkischer Beobachter, which claims that hundreds of innocent bystanders have been killed by the bloodthirsty communists and that the Freikorps, not the police, saved the day. This is of course false, but they print thousands of these issues, nail them to the walls and beat the bigger papers to the punch. Also, people already don't have much faith in the government so they're more willing to believe that the Reichstag was saved by a band of patriotic citizens rather than the police.
The people start to take notice of this new newspaper which gets its content out before everybody else. Some of the accusations it immediately makes about the KPD, such as that they are connected to Russia, actually turn out to be true, which gives the paper the reputation for reporting the truth long before anyone else does. On top of that, as established before, the Nazis are perfectly suited to take advantage of the emotions the German people are feeling post-World War I to gain. All of these things cause the Nazi Party's official newspaper extremely popular, giving the Nazis a suitable platform for their propaganda. And even though the communist movement has disgraced itself, the German people's anger at the state of things hasn't gone anywhere, and now it needs a new extreme ideology to latch onto, and Nazism is perfect for that. By 1928, the KPD is completely discredited, while the Nazi Party, through its influence over the extremely-popular Beobachter and by appealing to the German people's disillusionment, has convinced millions to hate Trotsky, Russia, Bolshevism, the Jews, and all combinations thereof. Just in time for the 1928 federal elections...
Excerpt from p. 213 of Between a Rock and a Hard Place: Germany Between the Great Wars by Otto Grünwald, 1946
The press would play a massive role in the politics of Germany in the latter half of the 1920s. Dominance over the media was a crucial part of the National Socialists' supplanting of the KPD as the main opposition, and control of the press was elemental in its eventual rise to power. This all started immediately after the November Putsch, when Deputy Führer Goebbels*, in a moment of astounding inspiration, had somehow foreseen that this would be the Party's chance to propel itself into the mainstream political scene at the expense of its Communist rivals, and swiftly mobilised his Party to take advantage of the KPD's failure and advance their own popularity and anti-Communist agenda.
By special orders of Deputy Führer Goebbels, Party members far and wide gathered in cramped Party offices to endure a long night of rigorous work. Goebbels had always had a knack for communications, as well as a keen understanding of the effectiveness of print media over the opinions of the public. So, despite the financial limitations of the Party, Goebbels had ensured that the Party would always be well-equipped to produce its own brand of propaganda in the form of its official newspaper. Though some Party offices were little more than small rooms in members' basements, most were equipped with printing presses and stocked with ink and paper. All through the night of 9 November, copy after copy of the Völkischer Beobachter was slammed out until tens of thousands of issues had been produced just in the vicinity of Berlin. Typically it was released on Fridays, but a Tuesday “special edition” had been hastily drawn up specifically to condemn the KPD's involvement in the Putsch.
Once a suitably huge number of issues had been produced, the paper's printers became its handlers and merchants. By two in the morning, half of all able Party members in Berlin—two, even three thousand men—were scurrying around the city, tacking up copies of the Beobachter onto every available building and edifice. The other half stayed in the offices, producing more copies for their compatriots to distribute.
By morning, the “special edition” of the Beobachter was even more conspicuous than the KPD's posters. As the citizens left home to head to work, they were greeted with large, eye-catching headlines proclaiming the events of the previous day to be the work of Bolshevik conspirators aiming to destroy the government. Interested by the new, unrestrained description of the event, millions of Berliners read their fill of information from this remarkable new newspaper. By the time the paperboys emerged, hocking the more moderate accounts of the Putsch to be found in the Berliner Tageblatt, most Berliners were already fully convinced of the NSDAP's wild interpretation of the event, and had no need to spend a few pfennigs just to hear what the reserved, mainstream sources had to say about it. On that day, the Völkischer Beobachter changed from a little-known rag run by a radical fringe group to a credible and intriguing source of information about German affairs. The National Socialists had finally been proven right about the dangerous ideas of the KPD, and they intended to take full advantage of this new credibility in order to pilfer popular support from the disgraced Communists.
*Goebbels is effectively the acting Party leader with Hitler still at Landsberg
Excerpt from p. 279 of Between a Rock and a Hard Place: Germany Between the Great Wars by Otto Grünwald, 1946
By 1928, the KPD was seen as nothing more than a radical fringe group. They were outspokenly unpatriotic, which made them unpopular in a Germany which was giving in to the self-aggrandizing nationalism which so often plagues defeated nations. They were known to be connected with the Russians, the Bolsheviks, and—even worse in the minds of a growing number—the Jews. The Communist Party had essentially arranged its own downfall with the Putsch, and its actions were rightfully condemned by all the main news sources as well as by the far-right press, so this decline would have occurred without the meddling of the National Socialists.
On the other hand, the NSDAP's rise, which mirrored the decline of the KPD, was a direct product of the journalistic tactics employed by the National Socialist Party in the months following the Putsch. After making itself known through its direct coverage of the coup, the Völkischer Beobachter proceeded to establish itself as a credible news outlet which covered stories more frankly and more interestingly than the larger papers did. Though anyone today is aware that the Beobachter was little more than a propagandistic tabloid serving the whims of the National Socialists, its credibility was greatly helped at the time because many of the baseless claims it had made regarding the KPD—such as that it was closely tied to the Russian government, that the government in Moscow had supported the Putsch, and that a disproportionate number of the Party were Jews—just so happened to be true. This persuaded millions of citizens that the Beobachter was capable of delivering the truth earlier and more honestly than any other news source.
In addition, while the other newspapers waited for the facts to come out before reporting them, the Beobachter lobbed scandalous, intriguing accusations with hardly any basis in reality. And whereas the main newspapers only ever drew restrained, boring conclusions, the Beobachter made outrageous, memorable claims that were just plausible enough to be believable. In short, the Beobachter became more interesting and more honest than the Tageblatt and the Zeitung in the minds of the people, mostly through luck and through dubious journalistic practises.
Once the Nazis had the ear of the people, they set to work gaining political support and convincing the people of their contemptible ideologies. Soon after the November Putsch, the official enquiries established that the Putsch had been stopped by the police, and that the NSDAP-affiliated Freikorps unit which arrived in the midst of the shooting had had no effect on the battle. Despite this, the Beobachter aggressively pursued the myth that the Freikorps had single-handedly stopped the coup in its tracks, while the police had sat around powerlessly.
Due to the average citizen's deep disillusionment with the government, this lie was more “believable” than the truth, and millions of Germans believed it. In this way, the Nazis effectively painted themselves as the patriotic saviours of Germany from the Bolshevik tide. This alone gained the National Socialists millions of supporters and deepened the popular disillusionment with the government.
The Nazis were also largely responsible for turning the German people against Bolshevism and the “Jewish Bolsheviks” who supposedly were in control of Russia and the KPD. Of course, the KPD's connections with Moscow had been well established during the official enquiries into the Putsch, and they were dutifully reported by the mainstream press. Thus, Trotsky's and Russia's involvement in the Putsch would have been uncovered even without the influence of the National Socialists.
However, it was the Nazis who used these facts to manipulate public opinion of Russia so negatively. With such headlines as “BEOBACHTER INVESTIGATION UNCOVERS BOLSHEVIK PLOT TO SUBDUE GERMAN SOVEREIGNTY” after a and “JEWS NUMBER SIXTY PER CENT OF COMMUNIST PARTY”, it is quite obvious that the Nazis were “guiding” their readership toward the conclusion that Russia was a dangerous, Jewish- and Bolshevik-controlled enemy of Germany
Taking into account the influence the Nazi Party's propaganda had amassed by 1928, it is no surprise that by the time of that year's federal elections, so many voters were thoroughly contemptuous of Russia, which they saw as Germany's historical and current enemy, which had secretly orchestrated the November Putsch and was still sending its Bolshevik spies and agents to disrupt German affairs; of Communists, whom they viewed as Russia's treasonous agents in Germany; and of Bolshevism, which they saw as a miserable ideology which had no provisions for the welfare of race or nation.
But more than anything else, they were contemptuous of the Jews. By 1928, millions of voting Germans were convinced that the Jews were at the root of all of Germany's problems, and that they were in control of Russia and the Communist Parties of Germany, and the Soviet Union; that Trotsky, himself of course a Jew, was their leader; that Bolshevism was merely a tool for the Jews to achieve supremacy; and, of course, that the Jews had betrayed Germany during the War, had created the Weimar Republic, and were secretly engineering the German people's woes to this day. The results, then, of the 1928 federal election are quite predictable in hindsight.