AND IT ONLY GETS UGLIER FOR DEMOCRATS:

The election two years from now had already looked difficult for Senate Democrats, who must defend 25 seats compared to just eight held by Republicans. The Democrats' list includes two independents, Vermont's Bernie Sanders and Maine's Angus King, who align with them.

Of those 25 senators, 13 are from states Trump captured or nearly won. Among those are Maine, Michigan, Pennsylvania and Wisconsin, which hadn't backed a GOP presidential candidate since the 1980s, leaving both parties trying to discern how much Tuesday may have reordered the lineup of blue, red and swing states.

Five Democrats are from states Trump easily carried, by 19 percentage points or more -- Indiana, North Dakota, West Virginia, Missouri and Montana.

"They should be terrified," Ward Baker, executive director of the National Republican Senatorial Committee, the Senate GOP's political organization, said of the Democrats.

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