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 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.) and Mary LandrieuMary Loretta LandrieuProject Veritas at risk of losing fundraising license in New York, AG warns You want to recall John McCain? Good luck, it will be impossible CNN producer on new O'Keefe video: Voters are 'stupid,' Trump is 'crazy' MORE (D-La.) trailing GOP opponents, as well as Republicans holding leads in Democratic-held open seats in Montana and Michigan. Sen. Kay HaganKay Ruthven HaganPolitics is purple in North Carolina Democrats can win North Carolina just like Jimmy Carter did in 1976 North Carolina will be a big battleground state in 2020 MORE (D-N.C.) is tied with her most likely opponent, while Sen. Jeanne ShaheenCynthia (Jeanne) Jeanne ShaheenOvernight Defense: VA chief won't resign | Dem wants probe into VA hacking claim | Trump official denies plan for 'bloody nose' N. Korea strike | General '100 percent' confident in US missile defense Trump official denies US planning 'bloody nose' strike on North Korea House Oversight Committee opens probe into sexual abuse of gymnasts 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 CottonThomas (Tom) Bryant CottonGOP looks for Plan B after failure of immigration measures Senate rejects Trump immigration plan Our intelligence chiefs just want to tell the truth about national security 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 Baucus2020 Dems pose a big dilemma for Schumer Steady American leadership is key to success with China and Korea Orrin Hatch, ‘a tough old bird,’ got a lot done in the Senate 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.