Republicans have leads in five crucial Senate races, according to new polling conducted for the GOP-aligned group American Crossroads.

The automated surveys from Harper Polling find Sens. Mark BegichMark Peter BegichPerez creates advisory team for DNC transition The future of the Arctic 2016’s battle for the Senate: A shifting map MORE (D-Alaska), Mark PryorMark 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.) and Mary LandrieuMary LandrieuCNN producer on new O'Keefe video: Voters are 'stupid,' Trump is 'crazy' CNN's Van Jones: O'Keefe Russia 'nothingburger' video 'a hoax' Trump posts O'Keefe videos on Instagram MORE (D-La.) trailing GOP opponents, as well as Republicans holding leads in Democratic-held open seats in Montana and Michigan. Sen. Kay HaganKay HaganLinking repatriation to job creation Former Sen. Kay Hagan in ICU after being rushed to hospital GOP senator floats retiring over gridlock MORE (D-N.C.) is tied with her most likely opponent, while Sen. Jeanne ShaheenCynthia (Jeanne) Jeanne ShaheenWeek ahead: Crunch time for defense bill’s cyber reforms | Equifax under scrutiny Five things to know about the Kaspersky-Russia controversy DHS bans Kaspersky software in federal agencies MORE (D-N.H.) has a lead in her race.

Partisan polling is typically taken with a grain of salt. That said, these polls show President Obama's weak standing is a major problem for Democrats in these red and swing states — and that Republicans have a strong shot at winning the net of six seats they need to take back the Senate.

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Rep. Tom CottonTom CottonOvernight Defense: Senate passes 0B defense bill | 3,000 US troops heading to Afghanistan | Two more Navy officials fired over ship collisions Lawmakers grapple with warrantless wiretapping program Senate passes 0B defense bill MORE (R-Ark.) leads Pryor by 42 percent to 36 percent in the race Republicans feel most confident about winning. President Obama's state approval rating is just 31 percent in the poll, which is in line with other surveys of Arkansas.

Landrieu is statistically tied with Rep. Bill Cassidy (R-La.) in a head-to-head matchup — Cassidy has a one-point lead, pulling 45 percent to Landrieu's 44 percent.

Alaska Lieutenant Gov. Mead Treadwell (R) leads Begich by 47 percent to 41 percent.

Leading Begich with the same numbers is well-funded former Alaska Department of Natural Resources Commissioner Dan Sullivan (R). Sullivan isn't as well-known statewide as Treadwell at this point, but has raised money at a much faster clip since he entered the race and has quickly emerged as the establishment's preferred candidate.

Former Michigan Secretary of State Terri Lynn Land (R) leads Rep. Gary Peters (D-Mich.) by 42 percent to 37 percent to take that state's open seat, though President Obama's 38 percent approval rating in the poll is lower than what others have found in the state.

In Montana, Rep. Steve Daines (R) holds a commanding 14-point lead over Lt. Gov. John Walsh (D), who many expect will be appointed to former Sen. Max BaucusMax Sieben BaucusBernie Sanders flexes power on single-payer ObamaCare architect supports single-payer system Trump has yet to travel west as president MORE's (D-Mont.) seat later on Friday.

Hagan is tied with North Carolina House Speaker Thom Tillis (R) at 44 percent apiece, while in New Hampshire, Shaheen leads former Sen. Scott Brown (R-Mass.) by 40 percent to 35 percent.

A Crossroads spokesman didn't say if the group polled in Georgia or Kentucky, two Republican-controlled states with competitive races. Groups often poll in a number of places and release the numbers that are best for them.

The automated polls were all conducted in late January.