At least you agree how Obama got elected, I don't think making people vote is going to improve anything. They are low low no information voters that are worse than those the Democrats complained about this election.
How does Germany vote on what they are not told?
The German election has both PR and FPTP. In other words, the make up of parliament will be, more or less, as the PR vote is. Anyone who doesn't make 5% in PR is kicked out unless they win a FPTP seat. So the parties who do get in have a slightly higher percentage of seats than the votes they got.
CDU 34.1% of the PR vote. 40.5% of the seats
SPD 25.7% of the PR vote, 30.5% of the seats
Die Linke 8.6% of the PR vote, 10.2% of the seats
Gruene 8.4% of the PR vote, 10% of the seats
CSU 7.4% of the PR vote, 8.9% of the seats.
That's basically 4 parties (CDU and CSU are essentially the same party).
There's also a constituency vote, though no smaller parties this time around gained a seat when they still got under 5% of the PR vote. The last time it happened was in 2002 when the PDS got 40% of the vote and 2 seats. But the option is there anyway.
If you look at constituency votes the CDU got 3% more votes there than in PR. SPD 4% more. Die Linke got 2.9% constituency and 8.6% PR. Die Gruene got 1.9% constituency and 8.4% of the PR vote.
So what it suggests is that big parties thrive on FPTP constituency votes, people are more likely to vote for them there than in PR when they're more likely to choose a smaller party.
Hence Germany has a 4/5/6 party system (Two parties got just under 5% and no FPTP seats). It means people have more of a choice. The big parties can't just rely on being the big party as they do in the US.
What does this mean? It means you have the choice of lots of parties. Their platforms are different, so you don't like the CDU's platform but don't want SPD to get into power you can vote for another party, like FPD. This means political parties need to appeal to the voters. They can't control the media like the reps and dems do, they need to actually appeal. In the US the parties tell people what the election is about, what issues are important. In Germany the people tell the politicians what is important.