If you live in a big city in a blue state, the cheapest gas around might be just over the state line. With the national average hitting $4.52 per gallon this week, drivers who live near a state with lower gas taxes are now jumping over the border for a discount at the pump. And often, that means going from a high-tax Democratic-led state to a lower-tax state where the government is either Republican or split. The prime example is California, which boasts not only the highest gas prices in the nation at $6.16 per gallon, but also the highest state gas tax at 61 cents a gallon. California residents are also charged an additional 34 cents to 44 cents per gallon for emissions fees and climate programs. In the Golden Gate State’s San Bernardino County, where gas is at $6.12, drivers are consciously making the trip to the nearby Mojave, Arizona, across the border to fill up at only $4.83 a gallon. A big contributor to the price difference is that Arizona charges just 18 cents per gallon in tax.…