When will people wise up and start voting in other parties?

It seem logical to me, that if people will stop voting for Twiddle Dee The Democrats, and Twiddle Dumb The GOP and start voting in other parties like the Greens, Independent, Peace and Freedom Party, etc. in large enough numbers that mattered, partisan pissing contests would come to an end. The way it is now both parties can stubbornly stand their ground knowing there is not anyone to break the tie. If the other parties had between 20 to 30% of the House and/or Senate, Twiddle Dee, and Twiddle Dumb will have to work with them, as well as each other.