Is there data about how popular the Nazis respectively their ideology was outside of Germany in the general population from early thirties to the end of the 2nd WW? In occupied countries as well as non occupied countries. Especially interesting to me are USA, Russia, England, Netherlands, France, Poland, Greece, Switzerland, Sweden. A list of Nazi support ranked by country would be awesome.
In Sweden, not very.
Sweden suffered severely from the Great Depression, especially as Kreuger's match empire collapsed in 1932. Svenska Tändsticks AB (Kreuger's match company) had been issuing and taking a lot of loans, and when credit dried up during the bank runs, the company collapsed, and Kreuger committed suicide on the 12th of March 1932. Svenska Tändsticks AB had been a major part of the Stockholm stock market (in 1930, it was alone 64% of the value of stock traded) and something of a "people's stock" with many small shareholders that lost a large part of their savings. The Stockholm stock market ceased to exist as a way to finance expansion of business or raise venture capital until at least the late 1950s.
The failure of Svenska Tändsticks AB caused a cascading series of failures in banks and other businesses and by late 1933 unemployment peaked at 23%. However, after that it would slowly decline and by late 1938 it was down to 10,9%.
Labour conflicts plagued Sweden during the first years of the 30s, culminating in the Ådalen incident, where military called in to protect strike breakers fired upon a demonstration heading for the strike breakers' barracks that failed to heed warnings to stop (either because they were unwilling or because they were unable as those to the rear could not hear the orders and pressed those at the front forwards). 4 strikers and 1 bystander girl were killed.
In a surprising manouvre, the social democrats usurped the indignation and rage over the killings and used it to mobilise for a victory in the 1932 election - despite the fact that the union on strike, the protest march and the 4 strikers killed all were communists. The social democrats and the agrarians formed a coalition government that introduced Keynesian political reforms to introduce state work in infrastructure and unemployment benefits and after some wrangling set the policy that any state work would pay a full market wage, to ensure that work done did not outcompete other work due to low wages. The work created a secondary railroad in northern Sweden and electrified a majority of the Swedish railroad network, among other things.
Here you might want to throw a glance at an earlier post of mine on how the Swedish social democrats made themselves acceptable to the old elite. The Swedish social democrats were strongly anti-communist and were in general successful in competing with the communists as the party of voice of the labourers. Thus communism never really presented the same level of threat in Sweden as it did in many other countries, and the old elite did not have to look to nazism to save them against the spectre of communism.
Sweden also introduced a ban on political uniforms in 1933 to combat any kind of SA forming in Sweden. The police was so diligent in enforcing this, that they actually arrested the first volunteer Home Guard formed in Sweden Spring 1940 (the Home Guard was soon sanctioned by the government and the arrestees released).
That said, Sweden had long and strong economical, industrial, academic and cultural ties to Germany and English would not replace German as the most common secondary language in schools until 1944. There were people who admired Germany and admired the nazis in Sweden.
There were 3 nazi parties in Sweden. These merged, splintered and combated each other furiously at times and cooperated at other times. The common denominator was abysmal support and even worse leadership.
Gunnar Sträng, at the time traveling social democratic representative and after the war long-standing minister of finance noted in his diary that he had at a hotel encountered a group of very drunk Swedish nazis that were drinking and loudly making death lists for when they had assumed power. Sträng dryly notes in his diary that prominent communists, social democrats, Jews and others that would disagree with the nazis all made the list, but in a lower order of priority than the leadership of the other two nazi parties, that evidently were higher in priority for execution.
So, a quick list of the 3 parties and their support.
After failure in the 1936 election, Furugård gave in and asked the membership - which had peaked at about 10 000 to join the splinter faction Nationalsocialistiska Arbetarpartiet - NSAP (The National Socialist Worker's Party).
Lindholm had joined Furugård's SNSP in 1930, but in January 1933 he led a splintering faction in forming his own party. For the rest of their mutual existence, both parties mostly spent their energies fighting each other. NSAP focused more on the anti-capitalist side of nazi ideology and in October 1938, the party changed its name to Svensk Socialistisk Samling (Swedish Socialist Union) - SSS. After the German invasion of Denmark and Norway in April 1940, the party took a surprisingly anti-German stance.
The party tried an election cooperative effort with SNSP during the election 1936, but when that failed to yield any result, both parties blamed each other. The party declined after the failure in 1936 and parts of it tried to dissolve itself, while others continued on. After the German invasions of Denmark and Norway, the party more or less died out, although some organised activity seem to have survived into 1941.
Colonel Martin Ekström was a colourful character - he had served as an instructor for the Gendarmerie in Persia before ww1 and brought part of his Gendarmes into Ottoman Mesopotamia to fight for the Central Powers during the war, becoming a Lieutenant in the Imperial German Army. He would after ww1 fight as a volunteer in the Finnish and Estonian armies in their struggle against their own revolutionaries. He would become a Lieutenant Colonel in the Finnish Army and a Colonel in the Estonian Army. When he returned from Finland to Sweden in 1934 to form his party, the otherwise (at the time) German- and nazi-friendly Swedish newspaper Aftonbladet laconically commented:
Han förklarade inledningsvis att han inte var någon talare och han bevisade detta påstående i fortsättningen.
My translation:
He initiated by explaining that he was not an orator and he went on to prove that statement.
Ekström would in 1942 try to volunteer for the SS, but was discouraged due to his age.
There were also two other parties that were nazi, but did not start out as such.
SNF was formed in 1915 as a reactionary conservative party and would after 1936 become more and more nazi and accept a very nazi set of political points in Spring 1938. 3 members of parliament switched from Allmänna valmansförbundet (General election union), a conservative party in 1934, so the party actually had representatives in the parliament until they were ousted in 1936. However, it can be argued that the party was not a nazi party until after 1936. The party splintered in 1941 and both splinters died out, with neither running for election again.
SP was an anti-Stalinist and anti-comintern communist party in Sweden which had splintered off from the comintern-loyal communist party in 1929. The party had representation in the parliament until 1940, when it lost all seats in the election. From 1939, the party faced severe economical hardship and started to accept money from nazi Germany. After the 1940 loss of all parliament seats, Flyg modified the anti-comintern stance to become a general anti-Soviet stance and the party slowly morphed into a nazi party, losing almost its entire membership base in the process. Flyg died in 1943, and immediately after the war, the party was dissolved.
Elections.
1932
Svenska Nationalsocialistiska Partiet, 15 170 votes, 0,6%.
Total 15 170 votes, 0,6%.
1936
Sveriges nationella förbund (still more conservative than nazi at this time), 26 750 votes, 0,9%.
Nationalsocialistiska arbetarepartiet, 17 483 votes, 0,6%.
Svenska nationalsocialistiska partiet/Nationalsocialistiska blocket, 3 025 votes, 0,1%.
Total 20 508 votes, 0,7% (47 258 votes, 1,6% if we include Sveriges nationella förbund).
1940
Socialistiska partiet (still more communist than nazi), 18 430 votes, 0,6%.
Note that no nazi party dared run for election in 1940 - the Swedes in general never forgave the Germans and the nazis - including the domestic nazi parties - for the attack on and occupation of Denmark and Norway, neutral nations and brethren people who had been no threat to the Germans.
Total 0 votes, 0,0% (18 430 votes, 0,6% if we include Socialistiska partiet).
1944
Socialistiska partiet, 5 279 votes, 0,2%
Svensk socialistisk samling, 4 204 votes, 0,1%
Sveriges nationella förbund, 3 819 votes, 0,1%
Total 13 302 votes, 0,4%
As you can see, the support is pretty low. Pet T Olsson in his "Svensk Politik" argues that the combination of a long democratic tradition of compromise at the lower level of politics and the social democrat's anti-communism and Keynesian economic policies "inoculated" Swedish politics against nazi influence.
There were of course a lot of nazi and German sympathisers among the officers, the industrial, economical and academic elite, but in general, Swedish public opinion was not very fond of nazis.
Edit: Corrected some spelling errors.