In Pennsylvania, the Democratic candidate for the U.S. Senate, Joe Sestak, accuses his Republican foe Pat Toomey of favoring China over hard-working Americans.

In a new website, the AFL-CIO pointedly tracks the loss of U.S. jobs to China and other cheap-labor countries.

With about a month to go more the Nov. 2 election, Democrats and their friends are pushing as a potentially pivotal issue the export of U.S. jobs.USA-CONGRESS/LEVIN

They believe, or at least hope, it will resonate with American voters worried about the economy and their own financial futures.

A memo by consultants Stanley Greenberg and James Carville suggests Democrats could use concern about the outsourcing of U.S. jobs to help stage an “October surprise” and retain control of the House and Senate in next month’s election.