David Brooks says Bernie Sanders's policies would make the United States more like Northern Europe
("Livin' the Danish Dream," column, Feb. 12), and Stuart Stevens says that in many respects American politics has moved to the left. Fair enough.
But research also shows that Republicans since the 1990s have become far more conservative. America's core political dynamic today is not a leftward trend or a rightward trend, but polarization -- or more precisely, asymmetrical polarization, in which Democrats have become somewhat more liberal and Republicans have become much more conservative.
DAVID BLANKENHORN
President
Institute for American Values
New York
