http://www.issues2000.org
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http://www.factcheck.org/
Don't believe ANYTHING in anyones ad. Any film-clip of the opponent (or of themselves) is usually out-of-context and misleading.
Also, read beyond the titles of things -- as your real perception of the content may be drastically different from the name a law/document/issue/policy actually has.
eg:
"Patriot Act" : hmmm... I'm a patriot.... so I must agree entirely with the "patriot act"? Maybe not, if you know of the potential abuses.
"Clear Skies Act" : hmmm... I like clear skies, so I must agree entirely with this, too?... Maybe not, if you know of the alternatives.
Don't flame me people.... I know there are people pro and con on each side. I'm just using those as examples on how an innocent sounding thing is a bit more controversial once you actually read the details.
Most news reporting has a slant.
Fox news, for example, is slanted toward the right-wing republicans.
MSNBC, for example, is slanted toward the left-wing democrats.
Read both sides stance on everything, and you can usually get a sense of what is important to you.
Someone above mentioned the WSJ -- and I would say that is the least-slanted news I've come across.
Also, watch "Meet the Press" on TV -- it's usually quite interesting, and not very slanted. (The guests are slanted, but the shows host and line of questioning isn't.)