I doubt if there will ever be the perfect candidate no matter what your beliefs are. I agree with a lot of what Dennis R, has to say. The free market needs to be invigorated to create job growth. Right now we are all sitting back waiting to see what is going to hit us next, more regulations, more taxes, another downturn, etc... We need to see less regulation, less taxes, more confidence, more control on spending from the government.
The people involved in any part of the public sector need to be reminded that they are supported 100% by the taxpayers money and/or elected/appointed by the people of this country to represent us, serve us, and be stewards of our tax money. However a higher and higher portion of the people are not paying taxes, and/or are being paid by taxes. If this continues they will have the majority of the vote and control and continue to take more from the private sector to support the rest that doesn't contribute to the system (themselves).
The best thing we can do is pick the candidates that have the best chance to beat those that do not agree with most of our beliefs. It doesn't make sense to only vote for the candidate that thinks exactly like we want them to, if they do not have a chance to beat the person we want replaced. We first have to pick from the candidates that can win the general election and then if there is more than one of those, choose the one that is closest to our beliefs. For example Ron Paul may be the guy who you think would be the best candidate according to your beliefs, but it is very unlikely that he could win the general election, so you should get behind someone else who can win.
Those who support a 3rd party candidate are usually trying to make a point, but a lot of times the support of that 3rd party candidate may cost the election of someone who would have been closer to your beliefs, and get someone a lot further from your beliefs elected.
We all have to get out and vote, just because our dream candidate is not running or didn't make it through the primary doesn't mean we should not vote, vote for the best man still standing that can move things even a little bit more in the directions of your beliefs.