You just said leftists support some form of socialism. According to the Wikipedia page, a social democracy is a social, economic, and political philosophy within socialism that supports political and economic democracy and a gradualist, reformist and democratic approach toward achieving limited socialism.
Liberalism is the ideological aspect of Capitalism, Leftists support some form of Socialism.
So you concede that social democrats are leftists?
Social Democrats support Capitalism with enlarged safety nets, they don’t support Socialism. So, no.
You just said leftists support some form of socialism. According to the Wikipedia page, a social democracy is a social, economic, and political philosophy within socialism that supports political and economic democracy and a gradualist, reformist and democratic approach toward achieving limited socialism.
So social democrats have to be leftists then