Approval Voting

[Polkergeist]

You guys have probably heard of approval voting. For those who haven't this voting system is very simple.
On a ballot you can vote for as many candidates as you want. In effect you are approving one or many candidates. The result is still first past the post but it allows voters to vote for minor parties as they can also vote for the major party candidate of their choice.

The question I would like to put out to Forumites is what would popular election results would look like under approval voting?

US at large, US states and other national results are all welcome.

[Polkergeist]

After perusing old approval ratings from the 2000 election @ pollingreport.com. I estimated the results of a nation wide approval vote for president by using a simple formula:

approve/ (approve + disapprove)

I used the closest CNN/Time Poll to the election on the 4 candidates.

The results are:

Bush: 61.7 %
Gore: 61.3 %
Nader: 45.2 %
Buchanan: 36.8%