There should be no structural bias in the presidential election system, even if population swings might oscillate over a long period of decades. If Democrats win a string of elections, it should be because their policies and their candidates appeal to a majority of the country’s voters, not because supporters are clustered in enough states to get to 270 electoral votes. Republicans should broaden their base beyond a shrinking proportion of white voters not simply to win back Colorado, but because a more centrist outlook would be good for the country.

The problems with the Electoral College — born in appeasement to slave states — have been on display for two centuries; this page called it a “cumbrous and useless piece of old governmental machinery” in 1936, when Alf Landon won 36 percent of the popular vote against Franklin Roosevelt but received only 8 of the 531 electoral votes.

But 76 years later, the system continues to calcify American politics. As Adam Liptak of The Times recently wrote, this year’s candidates campaigned in only 10 states after the conventions, ignoring the Democratic states on the West Coast and Northeast and the Republican ones in the South and the Plains. The number of battleground states is shrinking, and turnout in the other states is lower. The undemocratic prospect of a president who loses the popular vote is always present (it’s happened three times), as is the potential horror show of a tie vote that is decided in Congress.

The last serious consideration of a constitutional amendment to abolish the college, in 1970, was filibustered by senators from small states who feared losing their disproportionate clout. The same thing would probably happen today, even though Republicans (who tend to dominate those states) are increasingly skeptical of the college.

The best method of moving toward direct democracy remains the National Popular Vote plan, under which states agree to grant their electoral votes to the ticket that gets the most popular votes around the country. Legislators in eight states and the District of Columbia (representing 132 electoral votes) have agreed to do so; the plan would go into effect when states totaling 270 electoral votes sign up.