I see it as a desperate move to grab votes. I used to hope for more sane laws on cannabis in the UK but we've moved further and further away from that so I've become pretty sceptical of any political figure making that promise. 

On a side note, I'd love to see people educated on the harms of tobacco and cannabis used together in a spliff. It's such a common practice in the UK and it turns a relatively harmless drug like cannabis into something else entirely. So many of my friends can't enjoy weed without mixing it with tobacco and find it next to impossible to stop doing it. I quit tobacco in joints 2 months ago and although it was hard to begin with, it's one of the best decisions I've ever made. The weed/baccy high is just so dirty, I never want to go back.