What Would Happen if the Dems Win?

Supposing the dems win, and win solidly, taking firm control of the government for a while into the future, what might happen?

Just a sample: 

http://www.nraila.org/CurrentLegislation/Read.aspx?ID=2355

"More importantly, it makes no exception for the use of a firearm for self-defense."

So I guess if some guy breaks into your home, it would be illegal to shoot him. 

There have been explicit links between gun control and crime rates...
Plz to be giving references to peer-reviewed articles that have proven said link, kthxbye.