Very useful site.
And no matter which way you lean on the candidates or issues, keep this in mind.
When you cast a vote for the president you're voting not just for that person, but for the entire administration. That includes all the cabinet members, the attorney general, ambassadors, various agency heads and so forth.
The entire executive branch.
You're also deciding which party will be appointing federal judges, so it has a major impact, over time, on the judiciary as well.
Thousands of people.
Even when you're looking at the personal issues of one guy or another, and keeping fully in mind that the Pres is the most important single office holder in the land, it is wise to keep in mind what kinds of policies are going to stem from giving control of the executive branch to one party or another at all the levels it operates.