It's June 15th, 1912, at LaSalle Street Station in Chicago, Illinois.

53-year-old former President Theodore Roosevelt looks out from the window of his rail car as the train eases into the station,

draping the platform in smoke and steam. A large crowd is waiting for him. They've come to welcome

Roosevelt to Chicago ahead of the Republican National Convention. The wave flags and cheer as the

locomotive comes to a stop with a gentle shutter.

Roosevelt takes a deep breath, places a slouch-style cowboy hat on his head, and then steps out to greet the crowd.

Cameras flash and a brass band starts playing as Roosevelt's supporters surge forward.

Roosevelt beams as he makes his way through the crown, shaking as many hands as he can.

The people here don't seem to mind that he shouldn't even be in Chicago right now.

Usually presidential nominees keep their distance from party conventions, expected to keep their hands clean and remain above the fray.

But Roosevelt has already broken one tradition by seeking a third term as president and believing above the fray. But Roosevelt has already broken one tradition

by seeking a third term as president

and believing that the soul of the Republican Party is at stake,

he's more than willing to break another.

After all, if that's what it takes to reclaim the White House,

then that's what he's going to do.

Despite a rapturous welcome at the train station,

Theodore Roosevelt knows that not everyone in Chicago is pleased to see him.

Only a few days ago, the Republican National Committee made the controversial decision

to hand hundreds of delegates to Roosevelt's rival, William Howard Taft, Roosevelt's former protege,

and his successor as president.

But Roosevelt vowed to fight on, even though he knows the odds are stacked against him,

...