Midterm polls show polarized US

Editor's note: The Democratic Party regained control of the House of Representatives and the Republican Party retained the Senate in the US midterm elections. What do the election results suggest? And what influence the results will have on the US' domestic affairs and diplomacy? Four experts share their views on the issue with China Daily's Liu Jianna. Excerpts follow:

Polls reflect social changes

The US midterm elections ended in a small victory for the Democrats and a small failure for the Republicans.