He was already in a dead heat with Weldon, according to an independent poll.
Polls show Republican Senator Jim Talent in a dead heat with Democrat Claire McCaskill.
They show Clinton in a dead heat with McCain -- both coming in with 46 percent.
She'll hold a fundraiser in Chicago for Alexi Giannoulias, the Democratic Senate nominee locked in a dead heat with Republican Mark Kirk.
Worse for Mr Gore, the poll that put him in a dead heat with Mr Bush also found independents more likely to vote Republican than Democratic.
Mr. Siegel got his first high-profile test during the U.S. track and field trials in late June when Jeneba Tarmoh finished third in the 100-meter sprint but was later declared in a dead heat with Allyson Felix.
McCain planned to make the New York address as polls continue to show him in a statistical dead heat with Texas Gov. George W. Bush in New Hampshire.
Thursday, his four-bus convoy hit the road with the candidate beaming with confidence after the latest polls showed him in a statistical dead heat with Texas Gov. George W. Bush for Saturday's crucial Palmetto State primary.
CNN: Life on the Straight Talk Express: All McCain, all of the time
But national surveys show Mr. Obama is in a virtual dead heat with former Massachusetts Gov. Mitt Romney and ahead of Mr. Gingrich.
In North Carolina, the two major party nominees are locked in a dead heat, with McCain and Obama each claiming the support of 49 percent of likely voters.
Yet most polls showed him in a statistical dead-heat with Mr Obama going into their two conventions.
An NBC poll the day before the debate had put the men in a dead heat, each with 47% support.
However, with Williams being replaced by Trell Kimmons, who finished third in the US trials, Chambers now has a strong chance of going one better than the silver he shared with Kim Collins after a dead heat in Spain two years ago, behind the Nigerian winner Olusoji Fasuba.
BBC: Ivory Williams ban boosts gold hopes for Dwain Chambers
The competition between BMW and Mercedes-Benz for No. 1-selling luxury brand in the United States was nearly a dead heat through November, with the final outcome pending December sales results due Jan. 4.
FORBES: BMW and Mercedes-Benz: Rivals Are Closer Than They Appear
Paris topped his only previous World Cup win -- a dead heat tie for first with Hannes Reichelt in Bormio at the end of last year -- with a time of one minute 57.56 seconds.
In Missouri, which Bush won in the past two presidential contests, the new poll suggests it's basically a dead heat, with McCain holding a one-point advantage over Obama, 49 percent to 48 percent.
CNN: Polls: McCain forced to play defense in some red states
The poll showed Giuliani receiving 47 percent of votes in the hypothetical general-election matchup with Clinton, who scored 46 points -- a statistical dead heat given the poll's 2.5 percent margin of error.
CNN: Poll suggests Nevada could become a swing state in 2008
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