If the Democrats are in control, while they will be anti-business (mindless regulations, “green” policies, higher taxes, treating corporations as cash cows to be milked), they will liberally print money which will replace most of the damage (even if it results in inflation). The biggest threat to frum Jews will be from the fanatic secularists know running the Democratic party, though outside of New York City, they target Christians rather than Jews.
If the Republicans are in control, they will be supporting policies that promote economic growth and prosperity (though it will go badly for the Democrats who like to be apocalyptic alarmists).
If there is a split government, a bit of both. If one party believes the election was stolen, that could be a problem.