There is no threat to state capitalism. Its core institutions will remain basically unchanged and even unshaken. They may rearrange themselves in various ways with some conglomerates taking over others and some even being semi-nationalized in a weak sense, without infringing much on private monopolization of decision making. Still, as things stand now, property relations and the distribution of power and wealth won't alter much though the era of neoliberalism operative for roughly thirty five years will surely be modified in a significant fashion.It's not all doom and gloom, however. Chomsky offers some important perspective:
"Politics is the shadow cast on society by big business," concluded America's leading 20th century social philosopher John Dewey, and will remain so as long as power resides in "business for private profit through private control of banking, land, industry, reinforced by command of the press, press agents and other means of publicity and propaganda".
The United States effectively has a one-party system, the business party, with two factions, Republicans and Democrats. There are differences between them. In his study Unequal Democracy: The Political Economy of the New Gilded Age, Larry Bartels shows that during the past six decades "real incomes of middle-class families have grown twice as fast under Democrats as they have under Republicans, while the real incomes of working-poor families have grown six times as fast under Democrats as they have under Republicans".
Differences can be detected in the current election as well. Voters should consider them, but without illusions about the political parties, and with the recognition that consistently over the centuries, progressive legislation and social welfare have been won by popular struggles, not gifts from above.
Those struggles follow a cycle of success and setback. They must be waged every day, not just once every four years, always with the goal of creating a genuinely responsive democratic society, from the voting booth to the workplace.