There is not a single competent politician with a history of working for the good of the many in an electable position in the US at the moment.
The closest was Sanders and you saw what the Democrat Establishment did to make sure he was stopped.
Also, I'm sorry but I was in investment banking at the time of the 2008 and after seeing how he unconditionally saved the worst abusers in that industry, I don't think Obama counts as a good guy, so Bush to Obama wasn't really a pendular move between extremes: by the time of Obama the choice for anybody other than the well-off and the rich had already been reduced to Greater Evil vs Lesser Evil. Obama was a masterful speechmaker, but when it come to actual policies he was just another neoliberal working for the 1% and once in a while making a show of throwing some crumbs to the riff-raff.
IMHO in terms of working for the many, America hasn't had anybody anywhere close to Eisenhower as President since JFK.
Expecting that there will be a white knight president elected this time around given the state of Politics in America is pure Hope with almist nothing to back it (the closest is the guy who won the Democrat Primaries for NYC Mayor, and he hasn't even been elected yet and we're talking about a major city filled the people far more educated and worldly than the average American, so it's unlikely that his likely victory will translated to anywhere else in America than maybe one or two other similar cities).
I think the problem this time around is systemic and "bipartisan" (in that both main parties stopped representing most people and just use different styles Propaganda to herd the sheep or just turn people of from voting altogether) and also linked to the natural end of the period where the US was the dominant nation (basically, in the schedule of the Rise and Fall of Empires, the US has already been long enough in the peak dominance period to have reached the Fall stage) and as I meantioned in my last post, if you look around at other nations that were once great, they tend to fall quite a lot and then stagnate for a couple of centuries before they start recovering and none ever gets back to its peak.
This isn't really an America-specific problem it's a much broader Human Societies problem, and whilst the details are different the general pattern is the same (corruption, pretty much all of the elites making money of unproductive activities and political connections, people in general having delusions of superiority that vastly exceed the actual present day achievements and so on).