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We'd like to call your attention to these top political stories and multimedia, for immediate use.

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CAMPAIGN-THE UNDECIDEDS

WASHINGTON Loretta Mitchell is 100 percent sure she's going to vote in the presidential race come November. She doesn't have a clue who'll get that vote. That makes her a rare and highly sought after commodity: an undecided likely voter. By Nancy Benac and Jennifer Agiesta.

PRESIDENTIAL CAMPAIGN

WASHINGTON Mitt Romney's presidential campaign is trying to turn the page on a week of public stumbles and Republican hand-wringing Sunday, promising a redoubled effort in key battleground states to undercut his opponent's economic record as voters tune in for the final six weeks of a still deadlocked race. Meanwhile, President Barack Obama, taking a rare break from the campaign trail ahead of an address to world leaders on Tuesday, dispatched top allies to try to keep Romney's missteps alive in the minds of a dwindling cadre of undecided voters. By Steve Peoples and Josh Lederman.

SENATE-MISSOURI

JEFFERSON CITY, Mo. (AP) Written off by many in his own party a mere month ago, Republican Rep. Todd Akin has been slowly rebuilding his Senate campaign after apologizing for inflammatory remarks about pregnancy and rape. Tuesday is the deadline for Akin to get a court order to drop his challenge of Democratic Sen. Claire McCaskill. But Akin says he won't do so. By David A. Lieb.

WHY IT MATTERS-CLIMATE CHANGE

People love to talk about the weather, especially when it's strange like the mercifully ended summer of 2012. This year the nation's weather has been hotter and more extreme than ever, federal records show. Yet there are two people who aren't talking about it, and they both happen to be running for president. By Seth Borenstein.

MEDICARE-Q&A

The Associated Press put a series of questions to each presidential candidate about his plans for Medicare. Two separate stories examine their responses:

MEDICARE-OBAMA-Q&A

WASHINGTON He'll never turn Medicare into a voucher, but if you are lucky enough to be financially comfortable in retirement, odds are you'll pay higher premiums under President Barack Obama's plan. It's not just the 1 percent who'll feel the pinch. And take note, baby boomers: The Medicare you get won't be quite as generous as what your parents' generation enjoys. A higher deductible here, a new co-payment there, and the tweaks add up. By Ricardo Alonso-Zaldivar.

MEDICARE-ROMNEY-Q&A

WASHINGTON Medicare is the one health insurance plan that will cover virtually every American at some point in life, and Republican Mitt Romney is proposing the biggest changes since its creation nearly 50 years ago. Broadly speaking, Romney calls for shifting people now age 54 and younger into a different sort of Medicare. Once eligible, these people would get a fixed payment from the government, adjusted for inflation, to pay for either private insurance or a government plan modeled on Medicare. Current beneficiaries and those nearing retirement could stay in the traditional program. By Ricardo Alonso-Zaldivar.

MULTIMEDIA

An AP interactive, updated daily with campaign events, is available at /2012/election-2012/.

An HTML gallery of photos taken on the campaign trail by AP photographers using the popular Instagram photo sharing tool is now available at /2012/instagram-campaign-trail/