Building a party at grassroots level means creating a "Green Party"
Grassroots - organization - was created in 1986.
Grassroots East was created in 1978.
Da Grassroots was created in 1989.
Grassroots Projects was created in 2005.
Grassroots Business Fund was created in 2008-06.
It means the bottom level of an organization, or movement -- especially applied to political activities. The grassroots are contrasted with the party bosses and a grassroots movement is one that springs from the little people in the party.
The Libertarian Party
Republican. To be more specific, conservative grassroots republicans.
Formation of grassroots party
So you can have standing arguments to back you up
So you can have standing arguments to back you up