Public Policy Polling finishes off their look at the Colorado Senate race by polling the Democratic primary between appointed Sen. Michael Bennet and former House Speaker Andrew Romanoff, and finds a tight race:

In the Democratic Senate contest Michael Bennet leads Andrew Romanoff 40-34. Support in this race may end up having to do more with personalities than ideology, as there’s no real divide in support along liberal/moderate lines for now. Bennet’s up 42-33 with liberals and 40-36 with moderates. Both candidates are pretty well liked by the party electorate. Bennet’s approval is a 57/21 spread with primary voters and Romanoff’s favorability comes down at 45/15. The one place where there is a clear division is along racial lines. Bennet’s up 42-34 with whites while Romanoff has the 42-31 advantage with Hispanics.

For now this is a real race, but it remains to be seen whether Romanoff can compete with Bennet financially and his ability to do so will have a lot to do with whether he can win over the quarter of voters who are undecided.

Bennet’s approval rating would suggest that he’s in good shape, but Romanoff has a chance as well if he can muster enough support. The Democratic Senate Campaign Committee and the President have already backed Bennet, so Romanoff will have a headwind.

The primary challenge has already led Bennet to embrace reform of Senate rules like the filibuster, as well as lobbying reforms.