Seven times we watched Lance Armstrong pedal away as the winner of the Tour de France. Now, he's on another quest.

"The proof is there that secondhand smoke kills, that tobacco kills," says Armstrong.

He supports making Wisconsin public workplaces smoke-free. That includes bars and restaurants.

"In my opinion this is one of those pieces of legislation that should have happened yesterday."

More than 1,000 people, from around the state, filled the Monona Terrace Tuesday to hear Armstrong's message and raise their voice.

Armstrong is a cancer survivor. Through the Lance Armstrong Foundation, he's working to prevent the disease.

"It's absolutely your right to smoke a cigarette when you're alone. But, when you walk into a bar or restaurant or somebody's workplace, and you're smoking a cigarette, you're then violating somebody else's rights," he says.

According to the American Lung Association, secondhand smoke causes 3,400 lung cancer deaths each year and 46,000 heart disease deaths.

Armstrong says the evidence is clear. Governor Jim Doyle says it's time for lawmakers to act.

"Both leaders of both houses have to allow this to go on the floor, and if they don't, then I think the members need to say this is something we want," says Doyle.

The governor believes the bill will easily pass in both houses. That's Armstrong's hope as his mission to end cancer continues.

Opponents fear a statewide smoking ban would be bad for business.

23 states, including Minnesota and Illinois, have made it illegal to smoke in workplaces.

If approved, in its current form, Wisconsin's ban would take effect next January.