I would say from the outset. We will start this party, but we plan to lose the first 3 election cycles, straight out. But show people the stats of where the movement is going. Like a tidal wave that builds beneath the ocean. Let it get the momentum to where it completely devastates the political landscape. Set peoples expectations correctly and they will follow. Remember you will be fighting 2 parties at that point.
And since the (R) vote would be split, the Dems would win those 3 election cycles.
Republicans would be shut out of the Presidency, never regain power in the Senate, and probably lose the House in that time.
The majority, perhaps all of the Supreme Court will have retired by then, with a 'Rat President nominating their successors and a 'Rat Senate confirming them.
When you look at how far we've slid into Tyranny in the last five years, then give them another 7 or 8 to consolidate their power, do you think anyone but a 'Rat would ever win an election?