Stocks opened higher on Tuesday as Italian lawmakers prepared for a crucial vote on public finances that marks the latest turn in the long-simmering euro zone debt crisis.

The Dow Jones industrial average <.DJI> was up 35.72 points, or 0.30 percent, at 12,104.11. The Standard & Poor's 500 Index <.SPX> added 5.17 points, or 0.41 percent, at 1,266.29. The Nasdaq Composite Index <.IXIC> put on 17.03 points, or 0.63 percent, at 2,712.28.

(Reporting by Angela Moon; editing by Jeffrey Benkoe)