At this point in history, a vote for a third/fourth party from the the left is absolutely a vote for the Republicans. It may not be that way in 20-30 years, but today that is the reality.
By voting against Dems in the Senate and presidential elections, you will be de facto voting to replace RBG and Breyer with people to the right of Gorsuch. This will turn back nearly everything that has been gained over the past fifty years for the next fifty years. What we need will be dead for the rest of your life by throwing away your votes over the next 2-3 years.
RE: Not agreeing with DSA platform - that's a perfect example of what I've said- that if we don't agree 100% in your mind we don't agree at all. Let's look at some of the DSA's points:
Labor:
For over a quarter of a century on Wake boards, I have posted support for strong and expanded unions. I've argued with dozens of people that just having unions in every state strengthens earnings of even non-union workers. I've stated hundreds of times that union wages and benefits are critical for even non-union workers.
I've worked for living wage laws when you were in elementary school and for raising the minimum wage for decades. On these boards, I've shown RWers that it's a lie to say raising the minimum wage costs jobs when studies show that employment increases when that happens.
I've stated numerous times that CEOS are grossly overpaid and senior management is actually counter-productive to profitability. It should be given to the workers as this would increase their buying power and lives.
All of this and more aren't enough for you.
Money in politics:
Again, for my entire adult life, I've supported exclusively public financing of elections with no use of personal funds. I've said we should have much shorter election cycles. I was the loudest voice on these boards against Citizens United. Money isn't free speech. It never has been and never will be.
But this isn't enough for you.
Internationalism:
Again, I've been the board's stalwart in saying every day, borders become less meaningful. We should be helping third and fourth world countries for moral, political and economic reasons.
Those are just a few of the ways that I "don't agree with any of the DSA platform". Your blind ego and butthurt keeps you from seeing the very obvious.
As a fun aside, the uber-Trumpy Bobknightfan used to believe that no CEO should be paid over $1,000,000/year.
Please, for the love of god, stop saying "this isn't enough for you" and insisting that any disagreement means I'm demanding 100% agreement. I am explicitly not demanding 100% agreement. I voted for HRC and I voted in the dem primary in KS.
People are allowed to express disagreement without all the personal attacks. I'm trying to ask you nicely to treat me with a little more respect. I know I haven't always given you that respect, but your incessant claims that I am just like Trump are offensive.
Your "a vote for third party helps republicans" line may be true in some elections and not in others. In the KS governor race, I think Orman votes most likely hurt republicans. I am not disagreeing with you on the specific point, because it is difficult to measure and prove.
I am, i think, making a separate argument. That is that no party is owed someone's vote. They have to earn it. If McCaskill loses to Hawley, it won't be mine or the Green Party's fault. It will be McCaskill's fault. She is running just a terrible centrist campaign in a state that just overwhelming dominated big money interest with the rejection of MO's right to work law. She has a very rocky relationship with black voters in KC, and recently black leaders in KC refused to write a letter in support of her. She is one of the richest people in Congress. No one I know here feels like she gives a fuck about their material conditions. A "blue no matter what" position will never hold anyone accountable.
The Green Party will likely seek our local chapter's endorsement in the MO senate race. I don't know what will happen, but our chapter will democratically vote whether to endorse.
You keep saying that this vote or that vote will reverse everything accomplished. Before Trump even came along, we were seeing the reversal of past gains. I don't disagree that it may set us back. I'm arguing that liberalism is wholly incapable of fighting for, winning, and sustaining the kind of change I want to see in the world. That has never been more apparent than in the failures of the Obama administration.
Regarding the rest of your post, summarizing your long held beliefs: How do you think the Democratic party has done fighting for those same values?
If you care about labor, taking money out of politics, and internationalism, join a movement that shares those values.