Is it you're contention that we could do absolutely nothing that would allow the Democrats to gain a permanent advantage and win control of congress? I'm sure you don't believe that. If you agree that there are conceivable scenarios where the Democrats could win the election, I'll say it starts with GOP base voter disenchantment and low turnout (particularly in an congressional eleciton cycle).
No, I do not believe that the communist liberals have a chance to win control of congress.