Senate poll raises Republican hopes in Pennsylvania, Florida
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Republicans have narrow leads in two Senate races they must win to hold the majority, according to a new poll released Tuesday.

In Florida, Quinnipiac University’s survey finds Sen. Marco RubioMarco Antonio RubioOvernight Defense: Joint Chiefs warn against sweeping reform to military justice system | Senate panel plans July briefing on war authorization repeal | National Guard may have 'training issues' if not reimbursed Senate panel plans July briefing on war authorization repeal Rising violent crime poses new challenge for White House MORE (R) ahead of Rep. Patrick Murphy (D) by a slim, 2-point margin, at 49 percent to 47 percent. And in Pennsylvania, Sen. Patrick ToomeyPatrick (Pat) Joseph ToomeyBlack women look to build upon gains in coming elections Watch live: GOP senators present new infrastructure proposal Sasse rebuked by Nebraska Republican Party over impeachment vote MORE (R) leads Democrat Katie McGinty by a 49 percent to 45 percent margin, the poll found.

Democrats need a net gain of at least 5 seats to win 51-seat majority in the Senate and have placed high hopes on Pennsylvania, a state where their presidential nominee, Hillary ClintonHillary Diane Rodham ClintonThe Memo: Some Democrats worry rising crime will cost them The Hill's Morning Report - Presented by Facebook - Democrats await Manchin decision on voting rights bill Supreme Court battle could wreak havoc with Biden's 2020 agenda MORE, has consistently led Donald TrumpDonald TrumpGuardian Angels founder Curtis Sliwa wins GOP primary in NYC mayor's race Garland dismisses broad review of politicization of DOJ under Trump Schumer vows next steps after 'ridiculous,' 'awful' GOP election bill filibuster MORE in polls.

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While Republicans are worried about Toomey, they are more confident about Florida. The Miami Herald reported on Tuesday that the Democratic Senatorial Campaign Committee is pulling resources from the state, which could be a sign that they no longer think Murphy can win. 

The Quinnipiac survey also found that Sens. Michael BennetMichael Farrand BennetDemocrats make full-court press on expanded child tax credit Congress needs to fix the broken market for antibiotic development Schumer vows to only pass infrastructure package that is 'a strong, bold climate bill' MORE (D-Colo.) and Rob PortmanRobert (Rob) Jones PortmanWhite House advisers huddle with Senate moderates on infrastructure The Hill's Morning Report - Presented by Facebook - Biden support, gas tax questions remain on infrastructure This week: Senate set for voting rights fight MORE (R-Ohio) could be headed for a cakewalk on Election Day.

Bennet leads local Republican county commissioner Darryl Glenn by a margin of 56 percent to 38 percent; Portman leads former Gov. Ted Strickland (D) by a margin of 54 percent to 41 percent. 

Quinnipiac surveyed more than 600 likely voters in each state on land lines and cellphones with margins of error at about 4 percent. The polling took place from Oct. 10 to 16.