Is Spain's right wing definitely going to win the general election?

Since the left's drubbing in May's local and regional elections, many have assumed Spain's right will win the general election hands down. But the gap is now narrowing, with Pedro Sánchez the winner so far on the campaign trail. So who will win?

Is Spain's right wing definitely going to win the general election?
Since the left's drubbing in May's local and regional elections, many have assumed Spain's right will win the general election hands down. But the gap is now narrowing, with Pedro Sánchez the winner so far on the campaign trail. So who will win?