The politicians don’t spend much time in small population states as it is. They go to the states with the most electoral votes (ie voters). I do think there is a problem when the popular vote does not jive with the results of the electoral vote. Plus, people who place each electoral vote have the personal power to vote any way they choose. They can (but rarely do) vote contrary to how they supposed to vote.
The Bush family has tried to secure Texas and Florida. The Clintons abandoned Arkansas and set up camp in New York for the same reason (2008).