[wideawake]

So in 20 days the probability of a GOP takeover went from 11% (August 21) to 66% (September 11)?

[InterceptPoint]

So in 20 days the probability of a GOP takeover went from 11% (August 21) to 66% (September 11)?

Sure. As you get closer to the magic 218 seats and then exceed that number the probability of the GOP taking back the House rises rapidly and approaches 100%. It never makes it but it gets arbitrarily close.