I disagree with your overall analysis, Mr. Clark. I think it’s a political myth that people want everything, and don’t want to pay for it. That chestnut is very popular with Republicans and other oligarchs, but it isn’t supported by the facts as I’ve seen them. I think what most people want, is much more rational: they want, of they are suffering privation, to be able to see that doing so, actually works to fix things. Just as the average person is willing to pay extra to get a better car, or a nicer house, they are willing to pay more taxes, if they get better government services or other results from that. They rebel, when they suffer for apparently nothing.
In turn, I don’t think that the “wave elections” you refer to, are due to voters “expecting too much.” I think myself, that they are due to the political parties themselves, being either out of touch with the voters, or even due to them knowingly lying to the voters, in order to get elected. From there, it is often more or less external circumstances, that trigger the seeming “wave” votes.
In my lifetime, for example, I saw the Democrats win the Presidency with Kennedy, because Kennedy looked “nicer” than Nixon; then when he was murdered, the Democrats stayed in power for a variety of reasons, including sympathy about the murder. But the combination of the mess in Vietnam, with the beginning of the end of the post-world war 2 American free economic hegemony ride (nothing to do with either party), led to Nixon taking over. Then Nixon destroyed the reputation of the Republicans by covering up Watergate, and got Carter elected. Carter did nothing wrong, but lost to Reagan, due to the external event of the Iranian revolution, and to the ongoing, though gradually improving economic mess which began much earlier. Reagan benefited tremendously from a combination of his acting skills making him look stronger than he really was, as well as the entirely chance occurrence of the economy taking off as a result of the computer revolution of the early 1980’s. Then the economy tanked again, due to "Reaganomics"actually being a debacle, and so the Democrats came back into power again. Clinton benefited from another mostly external economic boom (another bubble unfortunately), and so despite his peccadilloes in office, he was easily reelected for a second term. Bush junior BARELY squeaked out a (debatable) win against the Democrats, because the Democratic nominee was a horrible public speaker, and because the economy was rumbling negatively again.
Bush got lucky, and 911 happened. That made him a shoo in for reelection, as was made clear when people were asked after they voted, whether they thought Bush winning would be bad for the country or not, and they said “yes, but I don’t think we should change horses midstream, so I voted for Bush anyway.”
Anyway, I think you can see where I’m going. I don’t see that the voters were mindless, or knee-jerk in why they voted as they did, each time there was an apparent good reason to change directions.
I did notice one relatively new wrinkle, though. That is, that the Republicans have simultaneously become vastly better at propagandizing America, while at the same time, have undercut themselves by purposely lying to various Americans, for expediency sake. That is, they PRETEND to strongly oppose abortion, and to support “states rights,” in order to trick certain groups into helping them gain power, and they’ve managed to fool the Democrats into thinking they have to offer Republican style solutions (such as the ACA) to the problems of the day, but once in office, the GOP again and again, fail to follow through on their promises, instead reverting to voting tax cuts for themselves ( they did it under Reagan, under Bush, and now again under Trump). That’s why the Tea Party came into being, after all. Those people were fed up with the Democrats, but they were also fed up with the Republicans.
My best guess for the 2018 elections, based on the fact that although Trump’s polls are horrible, but the Democrats have shown NO leadership whatsoever, is that again, the Democrats will not gain enough seats to change the nature of Congress. They are currently make the identical mistake that the Republicans made a decade back, of assuming that it’s enough to catch a Republican in a lie, or accuse them of screwing around on their wife, to get elected, and they therefore don’t need to actually formulate any policy ideas. And since the economy has been improving steadily since the mess in 2005, unless it suddenly tanks soon, Trump will get to take credit for it, and will easily win in 2020. This, despite the fact that more Americans despise Trump, than approve of him. That wont be because voters expect too much from politicians, if anything, it’s because they expect too little.