When capitalized, this adjective is often used as the adjective version of the political party (as in the thread title).
You’ve used (and quoted) “Democratic” as the adjective form of the political party yourself in prior posts – so no, it’s not believeable that this is “new” to you:
In more recent history, it’s the Democrat Party that pushed for the useless assault weapons ban and repeatedly tried to expand the useless assault weapons ban and to reinstate the useless assault weapons ban.
*Congressional Democrats, led by Sen. Dianne Feinstein of California, have reintroduced a bill that would ban assault weapons despite opposition in the Republican-led House and the reluctance of some Senate Democrats.
Feinstein wrote the original assault weapons ban, which became law in 1994 and expired in 2004. Democratic Reps. Carolyn McCarthy of New York and Ed Perlmutter of Colorado will lead the effort to push the bill through the House.*
Democrats reintroduce assault weapons ban
The bill failed because the Democrat Party fails to understand that support for the 2nd crosses all of the usual lines of political and social opposition.