I just read a thread about this on another site.
Bloomberg is forming his own organization that will be a parent org to two other gun control agencies. They are going to use the NRA playbook...sign up members, take donations, and spend money. They are going to send out a questionnaire to candidates and rank them on "sensible gun reform", similar to the NRA report cards. If you aren't behind gun control - I'm sorry, "sensible gun reform" - then they will not support you.
This is after the special election in Illinois in which Bloomberg basically funded the candidate of choice, then trumpeted the victory as a victory for gun reform.
Funny how the Koch brothers are demons for "buying" elections, but Bloomberg buying his Mayor's title, the election in Illinois, etc. doesn't even raise an eyebrow...I guess if it's done for the "right" reasons, it's ok?