"Hitler said, he first needed the Enabling Act. A two-thirds majority was needed, since the law would actually alter the constitution. Hitler needed 31 non-Nazi votes to pass it. He got those votes from the Catholic Center Party after making a false promise to restore some basic rights already taken away by decree.
Meanwhile, Nazi storm troopers chanted outside: "Full powers – or else! We want the bill – or fire and murder!!"
But one man arose amid the overwhelming might. Otto Wells, leader of the Social Democrats stood up and spoke quietly to Hitler.
"We German Social Democrats pledge ourselves solemnly in this historic hour to the principles of humanity and justice, of freedom and socialism. No enabling act can give you power to destroy ideas which are eternal and indestructible."
Hitler was enraged and jumped up to respond.
"You are no longer needed! The star of Germany will rise and yours will sink! Your death knell has sounded!"
The vote was taken – 441 for, and only 84, the Social Democrats, against. The Nazis leapt to their feet clapping, stamping and shouting, then broke into the Nazi anthem, the Hörst Wessel song.
Democracy was ended. They had brought down the German Democratic Republic legally. From this day onward, the Reichstag would be just a sounding board, a cheering section for Hitler's pronouncements.""
https://en.wikipedia.org/wiki/Otto_Wels
"On March 23, 1933 Wels was the only member of the Reichstag to speak against Adolf Hitler's Enabling Act (the "Law for Removing the Distress of People and Reich"). The vote took place during the last session of the multi-party Reichstag, on March 23, 1933. Because the Reichstag building itself had suffered heavy fire damage in February, the March session was held in Berlin's Kroll Opera House. Despite the incipient persecution of leftist and opposition politicians and the presence of the SA, he made a courageous[1][2] speech opposing the Enabling Act, which gave the Reich cabinet the right to pass laws without the consent of the Reichstag for a period of four years....All 81 SPD members of parliament who were present voted against the act.,,,In June 1933, Wels went into exile in the Territory of the Saar Basin, which at the time was under League of Nations control; in August 1933, he was deprived of his citizenship. He then worked to build the expatriate SPD, first in Prague, then in Paris, where he died in 1939."
http://www.gdw-berlin.de/en/home/