The problem with her is she is not well known and she hasn’t been VETTED. I.E. the leftists can CREATE a reality about her which does not reflect the facts. Blackburn or the governor of Arizona would be wise choices, but Pence or Gingrich would be better.
I think the ‘reality’ around Gingrich has long since been created. That would need to be broken...and how he left office makes him harder to defend with enthusiasm.
Heritage has Blackburn at 88%, her popularity in TN has gone down not up. Not really known on the national spot light like Pence is.
Corker on the other hand has a 53% rating from Heritage. RINO.