No, the 30% will still lose because it has no power nor money.
The solution is to first have a secondary to select the conservative candidate for the Republican primary
The cohesion required is to be provided by the GOPc, the conservative wing of the Republican party. Numbers on a thread yesterday show that there not only is promise for such a group in Congress but even more so in the new Congress.
The solution is not to form a new party, but to take control of the existing party. The solution will require political war
Even if 30% of the GOP could take control of the rotten husk (and I believe that could happen), the 30% cannot compel the 70%.
Most Republicans (meaning >50%) would rather vote for Hillary Clinton than Ted Cruz. It’s time to let them go in peace.