The Republican Party and the Nazi Party have quite a lot in common.
Both are currently based on the principles of white supremacy, both have arisen into a feverish rush of activity in a bad economic time, and they're both led by madmen who like to point to boogiemen. With Hitler, it was the Jews. With Romney / Rush / Grover, its the communists, or the "progressive agenda".
They repeat a million lies, and wish to indoctrinate the youth. Hitler had his Hitlerjugend. With the Republicans, they're using a magazine and private schools sponsored by churches.
They would like you to believe that Germany / America is the very best country in the world, filled with the best people. Any unpatriotic viewpoints not supported by the Party are quickly quashed, either with more propaganda and hateful speech, or with certainly more vile means commonly used by the Nazi regime.
In some ways, we have been transported back to the 1930s. It is up to the modern man today if we elect Adolf Hitler or not.