Gas falls to $4.18 heading into Election Day, down 11 cents in a week but still $1.14 above last year

The price of a gallon of regular gasoline kept sliding into the final weekend before the midterm elections, but it remains far above where it stood a year ago.

AAA's national average for regular was $4.184 on Saturday, down from $4.296 a week earlier and $4.434 a month ago, according to the motor club's daily survey. A year ago, drivers paid $3.040.

Where prices stand

Source: AAA national averages for Oct. 31.

Diesel stays high

Diesel has eased far more slowly than gasoline, falling less than 3 cents in a week. That matters for truckers and farmers. One Kansas farm family told CBS News that higher diesel and fertilizer costs added about $737,000 to its expenses this year.

Closer to home

In Massachusetts, the average for regular was $4.181 on Saturday, about the same as the national figure, AAA data show. Among the states AAA highlighted, Hawaii was the most expensive at $5.665.