Sen. Mark Pryor (D-Ark.) raised $1.22 million in the last three months, he announced Tuesday, less than the $1.35 million Rep. Tom Cotton (R-Ark.) brought in during the same period.
The two-term senator has led in the last four polls of the race, a shift from earlier polling showing a tie or Cotton with a narrow lead. Both campaigns have been on the air, as have outside groups, in what will likely be a hard-fought race through election day.
This post was updated at 5:25 p.m.