MADISON, Ind. — Rep. Joe Donnelly (D) will release internal polling today showing him with a 2-point lead over his Senate opponent, state Treasurer Richard Mourdock (R).

Donnelly leads Mourdock, 40 percent to 38 percent, in the survey paid for by the Democrat’s campaign. A Libertarian candidate, Andrew Horning, recieved 8 percent in that survey.

Two weeks before Election Day, the Indiana Senate race remains highly competitive. Roll Call rates it as a Tossup. On Tuesday night, the candidates will meet for their second and final debate in New Albany.

Public polling of the race is rare because of the Hoosier State’s restrictions on automated calls. But a mid-September, bipartisan poll from Howey Politics Indiana showed similar results.

Mourdock’s internal polling from early October showed the GOP nominee with a 3-point lead.

Global Strategy Group conducted Donnelly’s poll of 603 likely voters from Oct. 17 to 21. The margin of error is 4 points.

See Donnelly’s full polling memo here.

More coverage of the Rust Belt Road Trip here.