The social security collecting people, many of who don't owe income tax, are the most pro-republican voting age group in America.
Yes there are many pro Republican SSI recipients. Not sure if they are the most pro Republican as a group.
SSI is a government administered pension program. In theory it should not be considered "government assistance" because people pay into it, putting aside for a moment the funky, pyramid-scheme-like, actuarial calculations that fund it. There are many good people who paid their SSI tax. I wouldn't necerserily consider them as receiving "government assistance".
About the SSI actuarial calcualtions...
Without doubt, the social security collecting age group, is the most republican voting age group.
While no one can define what the heck Mitt meant with his 47% gaffe, one of the popular definitions, is that it means, those collecting a government check.
SSI recipients need never to have worked a day in their lives. You may be confusing it with regular retirement Social Security.
SSDI is Social Security Disability and requires a work history to collect.