Why are McCain and Obama on the ballot?

"The majority of Americans are against illegal immigration" is often said here. Why isn't Ron Paul, Trancredo, Romney or even Thompson on the ballot? Even as VP? Things that make you shift hummmmmm........
Answers:   
Ya i agree i cant stand either of them.
Because, despite the fact that the politicians from each party attempt to starkly differentiate themselves from the other, they are both political moderates.

In the current two-party system of nomination and rigorous processes, you only get a narrow pane of moderate politicians who can actually make it that far.

That said, people approaching Ron Paul are not moderates, even though they have a large popular backing.

John McCain and Barack Obama are both enormously middle-of-the-road politicians despite their differences on some minor issues.
Ron Paul pwns. Too bad the US electoral system is rigged.
Because Obama is the shizz
Because they lost at the convention of their respective party?
Ron Paul is a dingus who looks close to Magneto.
/discussion
Only 538 people are allowed to vote for the president. If every person voted far candidate "A" entrant "B" can legally be voted in by the 538! The government stated when this be instituted that this decision was too important to be trusted to the citizens because they are too stupid (not contained by so many words but.. ) I guess they still think of us us as idiots!
When did the president ever reflect what Americans actually think?
IDK
They are the nominees.
I usually hum to music or something, but whateva floats your boat.
hmmm...


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