In reply to timjones:
> How many German politicians have managed to get elected without aligning their views to a single political party?
At federal level, none, even though quite a few MPs have switched party allegiances. Most famously, when the Liberals almost split after denouncing the coalition with the Social Democrats and forming a coalition with Kohl's conservatives, quite a few social liberals joined the SPD, several rising to the rank of minister later.
> I can't see how proportional representation ca do anything to help with this problem.
PR makes starting small parties that fit the interest of some sector of society worth the effort. Once you clear the 5% hurdle, your voters will be represented!
Hence, there will be more small parties, in which even small groups of representatives do have an influence on the party lines.
The Bavarian CSU is a special case (as it is a large party at state level), but for the Liberals, Greens, and the postcommunist Linke MPs and the local committees that nominate them typically shape the party line, rather than kowtowing to it.
In contrast, change in the SPD and CDU appears to occur more in a top down manner (of course, these are rough approximations).
> I don;t want politicians that toe a party line in search of success, I want politicians that are willing and able to do what is best for the nation.
Again, more parties with a realistic chance of representation (and governing by forming coalitions) means that it is easier to find some program that comes closer to one's political ideals.
To then actually
do what is best for the nation I cannot see how you could do it without a party machine. How will you be elected, where do you find the personnel to govern according to your ideas should you win?
CB