Barack Obama has expanded his lead over John McCain in Missouri to six percentage points.

The latest Rasmussen Reports telephone survey in the state finds Obama with 52% of the vote while McCain is supported by 46%. Earlier this week, Obama was on top 50% to 47%.

Obama leads among voters who earn less than $60,000 a year while McCain has the advantage among those who earn $60,000 to $100,000 a year. Those with higher incomes are evenly divided. Read more…