Sen. Mark PryorMark Lunsford PryorMedicaid rollback looms for GOP senators in 2020 Cotton pitches anti-Democrat message to SC delegation Ex-Sen. Kay Hagan joins lobby firm MORE (D-Ark.) raised $1.22 million in the last three months, he announced Tuesday, less than the $1.35 million Rep. Tom CottonTom CottonMcCarthy: ‘No deadline on DACA’ DHS chief takes heat over Trump furor Lawmakers see shutdown’s odds rising MORE (R-Ark.) brought in during the same period.

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This is the third consecutive quarter that Cotton has outraised Pryor. But Pryor still has a larger warchest for the top-tier battle, with $4.4 million in the bank to Cotton's $2.7 million.

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.