Theresa May's position has been progressively weakened since the election, with suggestions that David Davis may take over as Prime Minister.
There is still some thought to calling a snap election to help sort out this mess. Any such snap election could look like this:
Labour seems to be in lead, and that lead seems to be slowly growing.
It is not unreasonable to think that Corbyn could win a majority if a snap election were called. Additionally, with a stronger leader, the Liberal Democrats could slowly grow in strength, perhaps gaining a few seats as well.
Not much else to say at this point. Corbyn is in a very strong position as it is, and the Tories will need to get their house in order if they plan to win the next election.