President Obama and Republican Mitt Romney entered the final days of the presidential race tied in a state that the campaigns only recently began contesting, a Tribune-Review poll shows.

The poll showed the race for Pennsylvania’s 20 electoral votes locked up at 47 percent in its final week. Romney was scheduled to campaign in the Philadelphia area on Sunday, and former President Bill Clinton planned to stump for Obama on Monday. The campaigns have begun to saturate the airwaves with millions of dollars in presidential advertising.

“They’re both in here because of exactly what you’re seeing” in this poll, said Jim Lee, president of Susquehanna Polling & Research, which surveyed 800 likely voters Oct. 29-31. Most of the interviews occurred after Hurricane Sandy inundated Eastern and Central Pennsylvania. The poll’s error margin is 3.46 percentage points.

Nearly 60 percent of people say the country is on the wrong track, and economic concerns continue to dominate. Almost half of likely voters say economic issues are the primary driver of their choice for president.

“I’m concerned about all the young people graduating from college, whether they’re finding jobs,” said Pauline Hoxie, 84, a Republican from Jersey Shore in Lycoming County. Her grandson graduated with a degree in graphic design but works a manual labor job because he can’t find openings in his field, she said.

Democrats shrugged off the Romney campaign’s late play for Pennsylvania, sending emails to supporters and journalists showing past Republican presidential candidates doing the same thing. Pennsylvania hasn’t given its electoral votes to the Republican candidate since 1988.

The state’s urban, suburban and rural voters usually give winners narrower victories than Obama’s 10-point win in 2008. John Kerry won by 2.5 percentage points in 2004; Al Gore won by 4.2 in 2000.