He wanted to control Corporate American, regulate Business, support Labor. His wife was a lawyer, at a time when women just did NOT get educated beyond grade school (as were his Son, his one daughter would become the first Congresswomen from Florida and later the first female ambassador from the US to any nation). He supported Farmers and advocated to use the Federal Budget to aid education (and to spend money to get the economy going). He opposed the whole concept of Social Darwinism and Eugenics when both where at the height of their support in this country (and this opposition was used against him as evidence he opposed "Science"). He opposed imperialism, advocating withdraw of US troops from foreign countries they were occupying (Through he did support wars that freed people from Tyrants). After his many runs for the Presidency, he would be appointed Secretary of State and resign that position when the President he had help elect refused to reign in Wall Street when Wall Street was pushing the US into a war Americans did NOT want to be in. He told anyone where he stood and why, and why they should support progressives. He advocated for the Common man when it was unpopular. He advocated for the Income tax, Women Right to Vote, Direct election of Senators (When all where unpopular).
For these progressive stand, he was attacked, both professionally and personally. He was attacked while alive and even 30 years after he died because the GOP still feared him (and had so blacken his name that people often thought of him as opposite of what he did stand for). The right attacked him, but so did the left (more because he opposed Communism as much a Capitalism).
For his progressive stand, he was nominated by the Democratic party Three times. HE was so feared by Theodore Roosevelt that many, if not all, of TR's progressive actions were more to head off this man's desire to be President then anything that had much support in the GOP. Each time he ran, he won a higher percentage of the Vote (But the GOP always pointed out fewer people voted for him, but ignored that even fewer people voted for the GOP candidate, you had a general decline in voting numbers during this time period).
In his Speeches you can see what became the NEW deal under FDR. He had his weaknesses (for example his silence of racism, a silence he shared with FDR for both needed white Southern Support to get the nomination and to get elected). He had that right balance of seeing what was needed, what could be done, and what to accept as not changeable in his day. He is to the LEFT of every other Democratic Nominated Candidate (Through some Candidates who ran for the nomination were to his left). I am speaking of the first Candidate who took his campaign to the people, instead of leaving the party win the election for him. That is the Democratic Nomanee for 1896, 1900 and 1908, William Jennings Bryan.
Dennis Kucinich has a while to go to meet that record, but Bryan was only 36 when he was nominated. Dennis Kucinich can be better than Byran, he might get elected but as long as the issue is the issue is "best presidential candidate ever" any candidate has a bit to go to be better than Bryan (And remember his time period is NOT our time period, look at him from his time period not ours, for that is the test for any such comparison).
A letter about Bryan written by his wife during the 1896 campaign, who had been admitted to the BAR in 1888 after being tutored by her husband (as was the custom of the time for MALE lawyers):
http://en.wikisource.org/wiki/Life_of_William_Jennings_BryanOne note on Bryan. He was so attacked during his life time by the press of his time period that many people have a negative notion of Bryan. Just remember when you read of Byran, read the "history" as you would read a FOX NEWS "History" of any Progressive Democrat. For the GOP first did what they do to Democrats to this day to Bryan and it is reflected in the many, if not most of the historical record.
History of his Daughter Ruth Byran Owen:
http://www.answers.com/topic/ruth-bryan-owen