The upvote guidance on questions is:
This question shows research effort; it is useful and clear
It does not suggest that an upvote should, in any way, be related to whether the question receives any answers i.e. it is purely about how the question presents itself.
I am one of the most frequent upvoters on this site, and I am about 1.25 times as likely to vote on an answer as I am on a question.
I glance at the topic of most questions posted here. If the topic does not look like it is in the form of a question that appears to summarize the question's content succinctly, then I will often not open the question which means it misses getting an upvote from me.
Once I have opened a question, if I feel it needs editing, then I am unlikely to upvote it. A lot of questions fall into this category because they have hastily penned titles, distracting chit chat (greetings/thanks/signatures/etc), ask multiple questions, or are hard to decipher.
I think a lot of questions currently arrive in a far less than clear state, so my rule of thumb is that if I can glance over it and understand what they are asking, without wondering whether it might mean this or might mean that, then it is an instant upvote from me.
I will answer some questions that I have not upvoted, or have even downvoted, if I think the answer I am giving may have value to the site. For these I will sometimes go back to make the question clearer so that I can then upvote it.
I strongly support upvoting questions that show research effort, appear useful and are clearly written. I do this because these questions are likely to attract potential answerers to invest their volunteered efforts into providing clear and comprehensive answers. Clearly written Q&As make it easy for any later viewer to quickly see whether it is the same as the problem that brought them to the site, and they are then likely to get their answer instantly.
I would not like to see GIS SE become an "ask anything, any way you like" site where "there is no such thing as a bad question" and every question gets an upvote to encourage more low quality questions. Clear questions deserve their upvotes because they instantly give potential answerers a chance to start on an answer without having to expend additional volunteered effort making clarifying comments, waiting for responses, and/or editing before they are in a position to do that.
Perhaps, if a user answers a question, they automatically up-vote it?
The Meta SE community, including me, does not think that this would be a good idea - see Automatically upvote questions you answer - Unless you say otherwise