President Barack Obama is tied with Republican presidential nominee Mitt Romney at 47 percent among likely voters, according to a poll released Monday afternoon by the Pew Research Center, echoing earlier polls that found the candidates circling each other closely since the first presidential debate in early October. Thirteen percent of likely voters remain undecided.

The poll confirms that the first presidential debate significantly altered some of the race's fundamentals, mostly by changing Romney's image, helping to establish him as a more likable, winnable candidate, and leaving him nearly deadlocked nationally with Obama. Enthusiasm for Romney also jumped after the first debate, with Republicans increasingly likely to express interest in the campaign and to say they're voting for Romney, rather than against Obama.

Thirty-six percent of voters said the debates on a whole improved their image of Romney, while only 18 percent said the same of Obama. Romney's favorability rating is now at 50 percent among registered voters, nearly identical with the president's.

The former Massachusetts governor also has the support of 57 percent of registered voters who "think of their vote as a vote for Mitt Romney, not as a vote against Barack Obama," according to Pew. That's the highest that number has been in the campaign. However, Obama still ranks higher, with nearly three-quarters of his supporters describing their vote as one for the president, and not one against Romney.

Romney has solidified a lead on economic issues, with 50 percent of registered voters viewing him as more likely to improve jobs, compared to 42 percent who put more faith in Obama. Half of voters said they don't think Obama knows how to repair the economy.

But on other issues, Obama retains a strategic edge. He is still viewed as more consistent, moderate and honest, and better equipped to work across party lines. Despite narrowing numbers after the first debate, he's still considered to be the stronger leader. Fifty-nine percent of Americans say Obama connects better with them, compared to 31 percent who say Romney has a better connection.

Polls have changed significantly for Obama since March, when nearly 60 percent of all voters and 86 percent of his supporters expected him to win. But a 49 percent plurality of voters, including 82 percent of his backers, still expect him to win reelection.

The Pew poll surveyed 1,495 likely voters by phone between Oct. 24 and 28, with a 2.9 percent margin of error. The full sample was 2,008 adults, with a 2.5 percent margin of error.

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  • 2012 -- Barack Obama

    U.S. President Barack Obama waves to supporters following his victory speech on election night in Chicago, Illinois on November 6, 2012. (JEWEL SAMAD/AFP/Getty Images)

  • 2008 -- Barack Obama

    Nov. 4, 2008: U.S. president-elect Barack Obama waves at his supporters during his election night victory rally at Grant Park in Chicago. (JEWEL SAMAD/AFP/Getty Images)

  • 2004 -- George W. Bush

    In this Nov. 3, 2004 file photo, President George W. Bush and first lady Laura Bush salute and wave during an election victory rally at the Ronald Reagan Building and International Trade Center in Washington. (AP Photo/Charles Dharapak, File)

  • 2000 -- George W. Bush

    U.S. Republican presidential candidate and Texas Governor George W. Bush casts his vote in Austin, Texas on November 7, 2000. (PAUL RICHARDS/AFP/Getty Images)

  • 1996 -- Bill Clinton

    President Bill Clinton, wife Hillary and daughter Chelsea wave to supporters in front of the Old State House during an election night celebration in Little Rock, Ark. on Tuesday, Nov. 5, 1996. (AP Photo/David Longstreath)

  • 1992 -- Bill Clinton

    Bill Clinton and Al Gore celebrate in Little Rock, Arkansas after winning in a landslide election on November 3, 1992. (AP Photo)

  • 1988 -- George H. W. Bush

    President-elect George Bush and his family celebrate his victory on November 8,1988 at the Brown Convention Center in Houston. (WALT FRERCK/AFP/Getty Images) <em><strong>CORRECTION:</strong> An earlier version of this slide was titled "George W. Bush." It has been fixed.</em>

  • 1984 -- Ronald Reagan

    President Ronald Reagan gives a thumbs-up to supporters at the Century Plaza Hotel in Los Angeles as he celebrates his re-election, Nov. 6, 1984, with first lady Nancy Reagan at his side. (AP Photo/File)

  • 1980 -- Ronald Reagan

    President-elect Ronald Reagan and wife Nancy wave to well-wishers on Tuesday, Nov. 4, 1980 at Century Plaza Hotel in Los Angeles after his election victory. (AP Photo)

  • 1976 -- Jimmy Carter

    Democratic presidential candidate Jimmy Carter embraces his wife Rosalynn after receiving the final news of his victory in the national general election on November 2, 1976. (Photo by Hulton Archive/Getty Images)

  • 1972 -- Richard Nixon

    U.S. President Richard M. Nixon meets at Camp David, Maryland, on November 13, 1972 to discuss the Vietnam situation with Secretary of State Henry A. Kissinger (L) and Maj. Gen. Alexander M. Haig Jr.(R), Deputy Assistant to the President for National Security Affairs. (Photo by AFP PHOTO/NATIONAL ARCHIVE/Getty Images)

  • 1968 -- Richard Nixon

    President-elect Richard M. Nixon and his wife, Pat, were a picture of joy at the Waldorf-Astoria Hotel in New York, Nov. 6, 1968, as he thanked campaign workers. At left are David Eisenhower, Julie Nixon's fiance, Julie and her sister Tricia at center. (AP Photo)

  • 1964 -- Lyndon Johnson

    President Lyndon Johnson proves he's a pretty good cowhand as he puts his horse, Lady B, through the paces of rounding up a Hereford yearling on his LBJ Ranch near Stonewall, Texas, on November 4, 1964. (AP Photo/Bill Hudson)

  • 1960 -- John F. Kennedy

    Caroline Kennedy peeps over the shoulder of her father, Senator John F. Kennedy, as he gave her a piggy-back ride November 9, 1960 at the Kennedy residence in Hyannis Port, Mass. It was the first chance president-elect Kennedy had to relax with his daughter in weeks. (AP Photo)

  • 1956 -- Dwight D. Eisenhower

    President Dwight D. Eisenhower and Vice President Richard Nixon salute cheering workers and Republicans at GOP election headquarters in Washington, November 7, 1956, after Adlai Stevenson conceded. (AP Photo)

  • 1952 -- Dwight D. Eisenhower

    President-elect Dwight Eisenhower and first lady-elect Mamie Eisenhower wave to the cheering, singing crowd in the Grand Ballroom of the Hotel Commodore in New York City on Nov. 5, 1952 after Gov. Adlai Stevenson conceded defeat. (AP Photo/Matty Zimmerman)

  • 1948 -- Harry S. Truman

    U.S. President Harry S. Truman holds up an Election Day edition of the Chicago Daily Tribune, which, based on early results, mistakenly announced "Dewey Defeats Truman" on November 4, 1948. The president told well-wishers at St. Louis' Union Station, "That is one for the books!" (AP Photo/Byron Rollins)

  • 1944 -- Franklin D. Roosevelt

    President Franklin Roosevelt greets a young admirer as he sits outside his home in Hyde Park, N.Y., on election night, November 7, 1944. Behind him stands his daughter, Mrs. Anna Roosevelt Boettinger and the first lady, Eleanor Roosevelt. (AP Photo)

  • 1940 -- Franklin D. Roosevelt

    American President Franklin Delano Roosevelt (1882 - 1945) speaking to a crowd of 25,000 at Madison Square Garden in New York on Nov. 8, 1940, before his sweeping re-election for a third term. (Photo by Fox Photos/Getty Images)

  • 1936 -- Franklin D. Roosevelt

    The Republican Governor of Kansas and presidential candidate, Alfred Landon (1887 - 1987) greeting the American President Franklin Delano Roosevelt (1882 - 1945) (seated) prior to the presidential elections. Future United States President Harry S. Truman can been seen in the background. (Photo by Keystone/Getty Images)

  • 1932 -- Franklin D. Roosevelt

    Governor Franklin D. Roosevelt of New York at his Hyde Park, N.Y. home November 6, 1932, seen at the conclusion of the arduous months of campaigning following his presidential nomination in Chicago. (AP Photo)

  • 1928 -- Herbert Hoover

    President-elect Herbert Hoover is seated at a table with wife, Lou, and joined by other family members on Nov. 9, 1928. Standing from left: Allan Hoover; son; Margaret Hoover, with husband, Herbert Hoover, Jr.,at right. Peggy Ann Hoover, daughter of Herbert Hoover Jr., sits with her grandmother. (AP Photo)

  • 1924 -- Calvin Coolidge

    U.S. President Calvin Coolidge and first lady Grace Coolidge are shown with their dog at the White House portico in Washington, D.C., on Nov. 5, 1924. (AP Photo)

  • 1920 -- Warren Harding

    Senator Warren Harding, with wife Florence and his father George, shown on Aug. 27, 1920. (AP Photo)

  • 1916 -- Woodrow Wilson

    Surrounded by crowds, President Woodrow Wilson throws out the first ball at a baseball game in Washington in this 1916 photo. (AP Photo)

  • 1912 -- Woodrow Wilson

    Woodrow Wilson (1856 - 1924), the future American president, casts his vote while Governor of New Jersey, on Nov. 14, 1912. (Photo by Topical Press Agency/Getty Images)