They’re incredibly surmountable. The issue is largely one of time.
Congressional districts, which hold down ballot, are set up based on the census. But the census is only done every 10 years. So you only get a real opportunity for a reset of those districts every decade.
Current GOP gerrymandering was conducted over the last 2 decades based on the last two censuses. First establishing and then expanding a disproportionate control over number of Congressional districts (and there by house and state offices). They’ve engaged in so called “court packing” where by under Bush they shoved through as many ideologically and party loyal judges they could. And under Obama used obstruction to prevent any but the same hitting the bench. Big chunks of the federal and even state level benches are badly under manned. Seats simply left vacant where they can’t be filled with GOP partisans (the bullshit over Garland for the supreme court is just the highest profie\stakes vrerson of this).
So with courts disinterested, or unlikely to do anything but back GOP redistricting tactics. And the GOP largely embedded enough at the state level to keep the gerrymandering up. There was little hope in rolling back any of this shit. Or doing anything about right wing obstruction.
Which is where 2020 comes in. New census means new districts. And we are\were unlikely to see much of a shift in power in either the House, or state to county offices until then. New census, with a hard fight over redistricting from 2020 onward. Offered the best long term plan on that. There have been serious demographic changes in the last decade, and even more since 2000. Changes predicted to favor the left\dnc ( and that already seem to be based on electorate changes the past decade).
So really this election. And the strategy for breaking up the GOP’s undemocratic lock on so many offices. Was to hold the white house, extant state down offices, and maybe pick up something in the senate. Clench your ass for 4 more years of unprecedented, butt hurt, obstruction. Then do your best to crack this up come 2020.
This year is changing that a bit. Trump is a disaster. He’s likely to lose badly. He’s already having a negative effect down ballot. With states and seats coming unexpectedly into play. Scalia is strict constructioning with angels now. So the top court is instantly less willing to allow games with districts, and the lower courts seem suddenly emboldened to slap this kind of bulshit down.
If Hillary wins, and if there’s even a slightly larger than expected shift for other seats. The left is in a much stronger position to make progress on the subject than expected. A Democrat’s appointment to the supreme court means the courts can practically be used to attack this stuff early. And even slight shifts in the disposition of state legislatures create a stronger position for non-biased districts once they start getting redrawn.
That said with the situation as it is we’re unlikely to see serious loss of GOP control of the house or state legislatures this year. Its just not all that possible the way things are currently drawn. But if Trump does as poorly as many hope (or fear YMMV) then we’ll we serious progress in 4 to 6 years rather than 8. And if we get some nice court decisions maybe even by the midterms. I suspect we might see some cases being brought after the election. Once its absolutely certain Obama or Hillary will be placing the next supreme court justice.
Should trump prevail? Well aside from all the other garbage the courts become a really bad avenue for reform on this front.