An internal poll taken in late January shows former Democratic Gov. Phil Bredesen narrowly edging out Blackburn in a hypothetical match-up. With Republicans controlling just 51 seats, a loss in Tennessee and other competitive races could put the Senate in play — despite an electoral map tilted heavily in the GOP’s favor.

The poll, conducted by Glen Bolger of Public Opinion Strategies for a Tennessee business group and obtained by POLITICO, shows Bredesen up 47 to 45, despite a sample that was overweighted with Republicans. The survey shows that voters preferred a generic Republican over a Democrat and strongly approved of Trump, signs that even in a Republican-leaning state like Tennessee, Blackburn is in for a tough race…

The distaste for Blackburn in some parts of the party is driving the campaign to recruit Corker to get back in. Those Republicans argue that she could blow a winnable race, pointing to Bredesen’s coalitions of Republican supporters when he won two gubernatorial races.