The end of Robert Mueller’s investigation. The loss of health insurance for several million people. New laws that make it harder to vote. More tax cuts for the rich. More damage to the environment. A Republican Party molded even more in the image of President Trump.

These are among the plausible consequences if the Republicans sweep the midterm elections and keep control of both the House and Senate. And don’t fool yourself. That outcome, although not the most likely one, remains possible. The last couple of weeks of polling have shown how it could happen.

Voters who lean Republican — including whites across the South — could set aside their disappointment with Trump and vote for Republican congressional candidates. Voters who lean left — including Latinos and younger adults — could turn out in low numbers, as they usually do in midterm elections. The Republicans’ continuing efforts to suppress turnout could also swing a few close elections.