In all of the tested states, voters oppose the government shutdown by lopsided margins, a sign that the shutdown may be damaging Republicans' electoral chances.

Sens. 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.), Mary LandrieuMary Loretta LandrieuSenate GOP rejects Trump’s call to go big on gun legislation Project Veritas at risk of losing fundraising license in New York, AG warns You want to recall John McCain? Good luck, it will be impossible MORE (D-La.) and Kay HaganKay Ruthven Hagan2020 Dems compete for top campaign operatives Senate GOP rejects Trump’s call to go big on gun legislation Politics is purple in North Carolina MORE (D-N.C.) all hold leads over their GOP opponents in the surveys, conducted by the Democratic firm Public Policy Polling.

Landrieu leads Rep. Bill Cassidy (R-La.) 48 percent to 41 percent. That lead grows to 52 percent to 42 percent after voters are informed about the candidates' positions on the shutdown. Pryor leads 44 percent to 41 percent over Rep. Tom CottonThomas (Tom) Bryant CottonGOP senator: Democratic opposition to Pompeo 'driven 100 percent by politics' Sunday Shows Preview: Emmanuel Macron talks ahead of state dinner Rand Paul under pressure as Pompeo hunts for votes MORE (R-Ark.), and that lead remains steady after the shutdown questions are asked. Hagan leads a generic Republican challenger 47 percent to 42 percent, and that lead jumps to 49 percent to 41 percent when voters are told she opposed the shutdown.

Rep. Gary Peters (D-Mich.) leads former Michigan Secretary of State Terri Lynn Land (R) 43 percent to 36 percent, and that lead jumps to 50 percent to 36 percent when voters are told he opposed the shutdown. Rep. Bruce BraleyBruce Lowell BraleyOPINION | Tax reform, not Trump-McConnell feuds, will make 2018 a win for GOP Ten years later, House Dems reunite and look forward Trump: Ernst wanted 'more seasoning' before entertaining VP offer MORE (D-Iowa) holds a lead of 45 percent to 41 percent over a generic Republican candidate, and that expands to 46 percent to 39 percent when voters are told he opposed the shutdown.

Georgia's Senate race could also be affected by the shutdown. Democrat Michelle Nunn starts off tied at 42 percent with a generic Republican in the race. When voters are told that three of her potential opponents, Reps. Phil GingreyJohn (Phil) Phillip Gingrey2017's top health care stories, from ObamaCare to opioids Beating the drum on healthcare Former GOP chairman joins K Street MORE (R-Ga.), Jack Kingston (R-Ga.) and Paul BrounPaul Collins BrounCalifornia lawmaker's chief of staff resigns after indictment Republican candidates run against ghost of John Boehner The Trail 2016: Let’s have another debate! MORE (R-Ga.) all supported the GOP position on the shutdown, she opens up a 6 percentage point lead.

Partisan polls should always be read with some amount of skepticism, and the way the question is worded seems to place the blame completely on the GOP, which may not be how voters view the situation and could inflate Democrats' standing in some of the later ballot tests. The shutdown appears to be nearing its conclusion, as well, and it's unclear how much this debate will impact an election that's more than a year away.

But nonpartisan national polling has found that voters blame the GOP much more for the shutdown than Democrats, and these results indicate that the ongoing shutdown may be badly hurting Republicans' hopes of winning a majority in the Senate next year.

"These polls make it clear that across the country, whether a state voted for Obama by 10 points or voted for Romney by 20, voters are extremely angry about the government shutdown. And it’s going to make Republican hopes of taking back the Senate next year that much harder," writes PPP pollster Tom Jensen in the memo.

--This report was updated at 1:59 p.m.