Politico this week offered a neat way to frame the midterm elections: Which kind of money will matter more — the enormous sums Republican groups are pouring into competitive races or the money voters are spending as gasoline prices climb toward $5 a gallon?It’s a clever lede. But it gives campaign spending far more power than it deserves.Join now to continue reading.Members get exclusive analysis, bonus features and no advertising. Learn more.If you’re already a member, sign in to your account.