He told the Globe on Monday that "when that announcement is made, I will seriously consider looking at it," but the poll seems to indicate he is already preparing for a run. 

The survey also tested Markey against some of those prominent Democrats who could challenge him in a special election primary, including Reps. Stephen Lynch and Michael Capuano; UMass Lowell Chancellor Martin Meehan; and Victoria Kennedy, widow of former Sen. Ed Kennedy (D).

The survey questions included ones that seem geared toward testing potential attacks against Brown, including the level of "doubt" a respondent has about a number of positive statements concerning Brown.

The pollster also asked about issues that came up during Brown's hard-fought race against Democrat Elizabeth WarrenElizabeth Ann WarrenRising star Abrams advances in Georgia governor race Progressive rise is good news for Sanders, Warren Juan Williams: Trump gives life to the left MORE, who went on to defeat him in November. Those include his votes in concert with Republican leadership, his support from Wall Street and his positions on women's issues.