You cannot do that by voting for Blairites.

In each seat odds are different and #voteswap works to get all real left parties in. Look how everyone backed out to let #CountBinface deal with Farage. It's certainly possible to get in dozens of progressives, maybe force Labour to bring Corbyn back.

Nader encouraged efforts to #voteswap out of swing states, I heard him suggest it at a talk. But he said not to be afraid of GW Bush because either the system of checks & balances would contain him or it wouldn't meaning the system was gone anyway. The latter turned out to be true.

And still is.