WASHINGTON/DEL RAY BEACH, Fla. - Facing a cliffhanger re-election attempt, US President Barack Obama will launch a round-the-clock, two-day campaign blitz through six battleground states next week to try to fend off the challenge from Republican Mitt Romney.

Polls show Obama's strong debate performance this week gained him little or no ground against the former Massachusetts governor with just over two weeks until the November 6 election.

The pair are essentially tied in most surveys as Americans remain split between giving Obama more time to fix the economy or choosing a former business executive who argues he knows best how to create jobs.

Obama will campaign in Iowa on Wednesday, then hit Colorado, Nevada, Florida and Virginia, cast his ballot early in his home town of Chicago, then stop in Ohio to end the tour.

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