(Reuters) Stock index futures pointed to gains for Wall Street for the third session in a row on Wednesday, ahead of a Greek parliamentary vote on austerity measures which is expected to be passed in order to avert a default for the highly indebted country.
* By 0846 GMT, futures for the S&P 500, Dow Jones futures and Nasdaq futures were up 0.2 to 0.4 percent.
* Optimism that Greece's parliament would endorse an austerity package has gathered pace in recent days. Giving a boost to the view, one of three deputies from Prime Minister George Papandreou's ruling Socialist party backtracked and said he would support the austerity plan vital for Greece to secure EU/IMF funds in July.
