There is a tendency for First-Past-The-Post (FPTP) electoral systems to result in two party systems, regardless of corporate influence.
This is known as "Duverger's Law".
And third party candidates can actually be detrimental to representativeness in FPTP-systems, as they may result in a winner who does not have a majority of votes behind him/her. As long as there are two candidates, the winner always captures (disregarding invalid/blank votes) at least a majority of the cast votes. With a third candidate, a candidate may win with a significantly lower percentage.
Here are some examples from US presidential elections where 3rd (or 4th) party candidates captured a significant share of votes:
- Lincoln won with less than 40 percent in 1860
- Wilson won with less than 42 percent in 1912
- Clinton won with 43 percent in 1992...
... And then there was Darth Nader in 2000...
So not only do those who vote for third parties throw their votes away... they may also end up throwing
other people's votes away, as a candidate could end up winning the election, even though a majority might have preferred another candidate in a head-to-head contest between two candidates.
This is why France has a
Two-round system, for instance...
In other words: Third party candidates risk (especially with voters who do not vote strategically) making the already unrepresentative US electoral system even less representative...
Also see:
https://en.wikipedia.org/wiki/Condorcet_methodhttps://en.wikipedia.org/wiki/Tactical_votingThis^.
Countries on mainland Europe (Germany,France, Netherlands) have multi party systems because their whole election systems are different. Not because they are any less dominated by corporations than we are.