How low will Hillary go?

Imagine being the frontrunner to succeed George Bush for as long as anyone can remember then finding that you are days away from possibly seeing your chances of securing your party’s nomination slipping from your grasp.

After Barack Obama took the lead in the delegate count, Hillary reshaped her campaign. But it had little effect and Obama continued his winning streak. Hillary always thought that Texas and Ohio would stop the Obama steamroller, but polls suggest that victory for Clinton in these two states is far from assured.

The question for me was always about how negative Hillary’s campaign would become.

In the past few days we have begun to find out.

See the BBC video summary here.