They represent a sliver of the electorate yet could still hold the key to the Oval Office. In a contest that's already the most expensive in history, we set out to meet the men and women whose choices are so highly prized: the undecided voters

POL-Biden-Virginia-Auto-Ad

Joe Biden, speaking to an enthusiastic crowd in Virginia Monday, continued his assault on Mitt Romney's T.V. commercial claiming Chrysler is sending Jeep production to China, saying the spot running in Ohio was scaring already-nervous auto workers.

POL-Ryan-Spokesman-Comments

A spokesman for Rep. Paul Ryan defended the Republican running mate's comments Sunday night --when he warned evangelical Christians that another four years of President Obama would threaten "Judeo-Christian values"-- were part of a topic the GOP vice presidential candidate mentions "frequently during the campaign."

POL-Ryan-Minnesota

Republicans in Democratic-leaning Minnesota made a show of force when Paul Ryan campaigned in the state two days before Election Day.

POL-Obama-Aides-Confident

Top aides to President Barack Obama on Monday expressed their confidence in an Election Day victory and placed stock in their campaign rituals.

POL-Romney-Campaign-Tuesday

Mitt Romney will campaign in Cleveland, Ohio and Pittsburgh, Pennsylvania on Election Day, campaign officials said Monday.

POL-Romney-Vote-MA

Republican nominee Mitt Romney and his wife Ann Romney will vote in Belmont, Massachusetts on Election Day, his campaign announced Monday. The GOP candidate will cast his vote at the Beech Street Center around 8:35 am E.T. on Tuesday.

POL-Sandy-Military-Aid

The U.S. military, both active duty and guardsmen, are helping the areas hit hardest by Superstorm Sandy, including making sure the residents can vote Tuesday. The U.S. Navy is also taking steps to make sure all the sailors get a chance to vote.

POL-Massachusetts-Senate-Polls

As the hours wind down until Election Day voters cast their ballots, two new polls in the battle for the U.S. Senate in Massachusetts indicate an increasingly tight race.

POL-senate-races

Even before a second Republican Senate candidate tripped over incendiary comments about rape, GOP leaders in Washington knew that their once promising chances of winning control of the Senate had diminished.

POL-house-preview

There may be little drama left in the outcome, but you wouldn't know that by watching the final days of campaigning in the battle for the U.S. House. Democratic and Republican congressional campaign committees and outside groups for both parties are ramping up spending and committing tens of millions of dollars to those races.

POL-gubernatorial-races-2012

Washington gubernatorial candidate Rob McKenna looks to help Republicans cross an important threshold while expanding their power at the top of state government nationally. McKenna is locked in a competitive race in a state that hasn't had a Republican governor in nearly 30 years. It's just one example of how the party is leveraging trends and strengthening its hand in a number of ways in state races across the country.

POL-ballot-initiatives

President Barack Obama's second term is on the line in Tuesday's election, but so is a key component of his signature health care reform law. Four states are voting on whether to allow residents and businesses to avoid Obamacare's requirement that they purchase health insurance for themselves or their employees. The ballot initiatives in Alabama, Florida and Wyoming would amend state constitutions. Montana's initiative prohibits federal and state government from requiring people to purchase health insurance through imposing a penalty, tax, fee or fine on those who do not do so.

POL-Voters-Microtargeting

Political ads on the airwaves have been so pervasive this year and voters in battleground states probably see them in their sleep. But when a political spot pops up while surfing the Web, there's a good chance it's aimed right at you. The practice is called microtargeting and like a lot of marketing techniques on the Internet aimed at identifying consumer tastes and behaviors, it is an information-age approach that is helping to change how political groups identify and interact with voters.

POL-Pentagon-Inauguration

More than two months before the chief executive takes office, the Pentagon is preparing for the next presidential term -- regardless of who wins.

POL-Adelson-Op-Ed

The billionaire casino mogul who pumped millions into pro-Republican efforts this year -- most notably groups backing Newt Gingrich and then Mitt Romney's bids for the White House -- penned an op-ed on the eve of Election Day explaining why he is backing the GOP.

POL-Palin-Romney-Facebook

Sarah Palin skewered President Barack Obama on Monday and urged voters to turn out for Mitt Romney in a Facebook post, as close to an endorsement as she's come for the GOP presidential nominee.

MONEY

MONEY-stocks-markets

U.S. stocks closed higher Monday, as investors await the outcome of an uncertain U.S. presidential election.

MONEY-Netflix-Poison-Pill

Netflix on Monday said it has adopted a "stockholder rights plan" designed to prevent activist shareholders from launching a hostile takeover.

MONEY-american-airlines-pilots

The union representing pilots at American Airlines said Monday it is getting closer to hatching a deal that would help the carrier emerge from bankruptcy protection.