Spain's Socialist party leader Pedro Sanchez is hoping to persuade a majority of parliamentary deputies to back his bid to form a new government. but the lack of support from other parties suggests he won't be successful.

Sanchez's presentation speech Tuesday will be followed by debate and a vote Wednesday in which he will need a majority in the 350-seat parliament to succeed.

But the Socialists, who won 90 seats in the Dec. 20 inconclusive election, have only the support of centrist newcomer Ciudadanos, which has 40. Both the conservative Popular Party, with 123, and far-left newcomer Podemos, with 69, have said they will vote against him.

Sanchez has another chance two days later in a vote in which he only needs more votes in favor than against.