Complex sentence: Though Transport Scotland has never given formal commitment to the project as it hasn't been included in their list of future investments, former Scottish Labour leader Jim Murphy supported the project and said they would build it if they were to win the 2016 Scottish elections.
Split into simpler sentences: Though Transport Scotland has never given formal commitment to the project as it hasn't been included in their list of future investments. The at the time Scottish Labour leader Jim Murphy supported the project and said they would build it if they were to win the 2016 Scottish elections.