There is a logical explanation... A significant majority of the folks here are conservatives not republicans.
A distinction lost on many folks, unfortunately.
Why is it more conservative to say that you can only vote for somebody you agree with 100% of the time and not that you vote to ensure the more conservative candidate wins? Why can you live with yourself if you vote for somebody who has no chance of winning? Does it not bother you that you didn’t do everything in your power to prevent a Communist from getting a second term?