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Stocks climbing again, and the GOP hopefuls who depend on Wall Street

U.S. (^DJI, ^GSPC, ^IXIC) stocks are continuing their climb today as the S&P 500 turns positive for the year. Earnings from the likes of Home Depot (HD) and Walmart (WMT) led the way higher in early trading.

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Here are some of the other stories Yahoo Finance is keeping an eye on today.

Wall Street and the 2016 presidential race
Wall Street's paying up big time. It's no secret that the financial industry is one of the biggest sources of presidential campaign finance. But you might be surprised which presidential hopefuls are taking in the most money, both in dollar amounts and as a percentage of their total funding.

Encryption and the battle against terrorism
Next, encryption as we know it was invented in the early 1990s, and it was immediately controversial. It's now ubiquitous, though, being used in everything from online banking to online shopping. But as a result of the recent Paris attacks, the legality of the underlying encryption technology is again in the spotlight.
Bakken oil production slides
Now to the price of oil and it's impact on places like North Dakota that produce it. Production is down for the first time in a decade there, prompting some to wonder if the boom is starting to go bust.

Chip and pin woes
Have you noticed longer lines at the supermarket and other stores? If so, you might be able to blame those new credit cards outfitted with microchips. The new systems seem to take longer to process the chip than swipe technology, worrying some retailers ahead of the holiday shopping season.

The rise of chip and pin technology here in the U.S. is also causing friction between banks and retailers. Merchants claim they have spent billions upgrading their systems and that they are not protected from fraud any more than they were before.