I agree. They are all over social media as well and they often respond to questions. Continuing with the example of Greg Orman - https://www.linkedin.com/in/gregorman Take everything with a grain of salt though and read from many different sources. Everything has a little bit of bias and can miss details. http://onpolitics.usatoday.com/2014/10/01/greg-orman-obama-senate-ad-kansas/ So go to lots of sources. Politicians by nature strictly control their public image. The wider diversity of stories the richer understanding you will have.
Write them a letter and see if you get a form back or something more personal. You can also go online and watch their videos. Look for interviews though, not campaign material. It is biased. Here's a good one from Greg Orman who ran for Senate in Kansas as an Independent. http://www.kwch.com/news/local-news/greg-orman-wife-sybil-sit-down-with-eyewitness-news/29109894