John McCain's campaign says the election will be like past ones.

In a conference call with reporters this morning, McCain pollster Bill McInturff said that the breakdown of voters on Election Day will be similar to what it's been over the past 30 years.

He noted that Democrats Jimmy Carter and Bill Clinton received roughly around 50 percent of the vote.

"It is very hard for a Democrat in a center-right country to get above that number," he said.

He argued that the historical voting patterns will be a "structural barrier" to Democrat Barack Obama winning the presidency.

McCain's national political director, Mike Duhaime, said that a high-level of cooperation between the campaign and the Republican National Committee will offset the spending advantage that Obama has.