Former Colorado Lt. Gov. Jane Norton (R) is in a statistical tie with Sen. Michael Bennet (D-Colo.) heading into their party's precinct caucuses next week, according to a Public Policy Polling (D) survey.

The Colorado Senate race has lacked much in the way on non-Rasmussen polling. While that firm has shown Norton with a significant lead on Bennet, the new PPP survey and a January Research 2000 poll for the liberal website Daily Kos have shown the race effectively tied.

PPP has both candidates at 43 percent while Research 2000 had Bennet up 40-39.

First, though, both Norton and Bennet face key tests when party activists begin weighing in next week. Bennet is facing a primary challenge from state House Speaker Andrew Romanoff, who could make a strong showing in the caucuses. Norton could also face some anti-establishment fervor, with Weld County District Attorney Ken Buck beating her in a series of recent straw polls.

Precincts caucuses eventually lead to a state assembly, where Romanoff or Buck could get a boost with a win.

Romanoff leads Norton 44-39 in a prospective general election matchup.