WASHINGTON, Oct 26 (Reuters) - The race for a U.S. Senate seat in Pennsylvania, which might decide whether President Barack Obama's Democrats retain control of the chamber, is a dead heat one week before the election, a Reuters/Ipsos poll showed on Tuesday.
Democrat Joe Sestak has gained ground on Republican Pat Toomey who he has recently accused of wanting to export U.S. jobs to China.
Both candidates are now at 46 percent of support from likely voters, the poll showed.
Republicans are expected to win control of the House of Representatives in the Nov. 2 election as voters give low marks to Obama's handling of the sluggish economy.
They are also set to win several seats in the Senate, but it is unclear whether they will be able to pick up the 10 seats needed to win outright control there.
Reporting by Alistair Bell and Andy Sullivan, Editing by Sandra Maler