"Just a small quibble, state winner-take-all laws do not lead to "Democrats, for example, typically devot[ing] more resources to mega-states like California -- where recent voting history gives them a better chance of claiming the 55 electoral votes (one for each U.S. House seat and the two U.S. Senate seats) -- than small states like Oklahoma where only seven electoral votes are up for grabs and the state hasn't voted for a Democratic presidential nominee since Lyndon Johnson in 1964."
Presidential candidates of all parties ignore California and California voters, too, because they, like Oklahoma, are among more than 2/3rds of the states and voters that are not competitive.
The current state-by-state winner-take-all method of awarding electoral votes (not mentioned in the U.S. Constitution, but since enacted by 48 states), under which all of a state's electoral votes are awarded to the candidate who gets the most votes in each separate state, ensures that the candidates, after the primaries, will not reach out to about 76% of the states and their voters. Candidates have no reason to poll, visit, advertise, organize, campaign, or care about the voter concerns in the dozens of states where they are safely ahead or hopelessly behind.
Presidential candidates concentrate their attention on only the current handful of closely divided "battleground" states and their voters. There is no incentive for them to bother to care about the majority of states where they are hopelessly behind or safely ahead to win. 9 of the original 13 states are considered “fly-over” now. In the 2012 election, pundits and campaign operatives agree already, that, at most, only 12 states and their voters will matter. They will decide the election. None of the 10 most rural states will matter, as usual. About 76% of the country will be ignored --including 19 of the 22 lowest population and medium-small states, and 17 medium and big states like CA, GA, NY, and TX. This will be more obscene than the 2008 campaign, when candidates concentrated over 2/3rds of their campaign events and ad money in just 6 states, and 98% in just 15 states (CO, FL, IN, IA, MI, MN, MO, NV, NH, NM, NC, OH, PA, VA, and WI). Over half (57%) of the events were in just 4 states (OH, FL, PA, and VA). In 2004, candidates concentrated over 2/3rds of their money and campaign visits in 5 states; over 80% in 9 states; and over 99% of their money in 16 states.
More than 2/3rds of the states and people have been merely spectators to presidential elections. That's more than 85 million voters ignored. When and where voters are ignored, then so are the issues they care about most.
Policies important to the citizens of ‘flyover’ states, like Oklahoma, are not as highly prioritized as policies important to ‘battleground’ states when it comes to governing."