Key Pennsylvania Senate race in dead heat: Reuters/Ipsos

Reuters reports:

A Senate race in Pennsylvania that could determine whether President Barack Obama's Democrats retain control of the chamber is deadlocked one week before the election, a Reuters/Ipsos poll showed on Tuesday.

Democrat Joe Sestak has gained ground on Republican Pat Toomey after accusing him of wanting to export U.S. jobs to China and both candidates are now level on 46 percent.

Republicans are expected to win control of the House of Representatives in next Tuesday's election as voters give low marks to Obama's handling of the sluggish economy.

One of the key Senate races to watch.