Like several here I don't like the left or right.
1. Do we need a third party to form and grow
2. You want to stick with the left as your party
3. You want to stick with the right as your party.
4. You...... Speak your own peace
I don't think a third party is necessary.
When two parties disagree a lot, a third party is just adding noise. And unless a third party offers a substantially different point of view from the other existing parties, it really hurts the popular opinion. In fact, it is a known method to misdirect a poll to offer choices that closely resemble each other. It splits the vote between closely resembling opinions and can lead to the victory of the less popular option.
For example, if I ask:
What is your favorite color?
- Red
- Cyan
- Cobalt
In this case, Options 2 and 3 closely resemble each other but Option 1 is very distinct. Thus Option 1 can collect many votes (there being no other closer options) but Options 2 and 3 may lose votes (as they closely resemble each other).
Moreover, creating more options creates an adverse burden on voters. Voters have a limited amount of time to decide what they want. More options means they have less time to spend considering each option. Voters can get more easily confused by the options. This leads to voters voting with less information overall and making less informed, worse decisions.
Additionally, when presenting more candidates from many parties, the parties will be smaller and tend to present candidates that appeal less to all the voters (each candidate will tend to be less appealing overall). When there are fewer parties, they will be bigger and tend to present candidates that are more appealing overall to voters. And with fewer parties the parties, the parties themselves are forced to do more of the information work, which causes voters with limited time resources to be more informed overall on their options.
All in all, there are many reasons why whenever you have an election or present a poll, there should be a concentrated effort to reduce the number of available choices to the most pertinent and distinct in order to achieve the best results.
For example, if I ask what is your favorite color?
- Red
- Blue
The options have been condensed to something very clear and the result will be more accurate.
When do you need a third party?
Well, when the parties get too similar and you start to get something like
- Purple
- Violet
Then you know it's the ideal time for a third party and you can get something like:
- Purple
- Violet
- Yellow
If it's a poll, then something like
- Red
- Blue
- Yellow
would be good, but if it's an election, then it's bad. What should've happened is that two of the three parties should've blended, giving something like:
- Orange
- Blue
Or
- Red
- Green
Or
- Orange
- Green
I hope I've given you something to reflect on. In particular, the strength of a two party system over a three party system or other multi-party system. While there is a time and place for third parties, third parties ought to substantially offer something not in the existing parties. Third parties should never be just a variation on an existing party. Like
- Red
- Blue
- Purple
Or
- Red
- Blue
- Orange
Or
- Red
- Blue
- Green
Because those will tend to corrupt the election results. Ideally, there should never be third parties for very long either. Ideally, one of the three will get absorbed into the other two.
This discussion assumed a single result winner takes all scenario, such as a Presidency.
If you are electing a large body of representives like a Congress, third parties are much less harmful because the Congress still has to compromise to pass legislation. In that situation, a distinct third party like:
- Red
- Blue
- Yellow
could become highly desireable (just as it would for a poll). A Third Party in a Congress will mediate and regulate the effects of the other two parties, if the third party is a distinct party standing on its own. A Third Party that is something of a duplicate of an existing party doesn't add as much to Congress.
TL;DR? A Third Party needs to really add something that the other parties don't have in order to become a meaningful option to voters that contributes in a beneficial way to politics. Third parties are actually bad when they are just a pale reflection of one or more of the other existing parties.