Final answer:
Advocates of political party revival are seeing signs such as the emergence of new parties or factions, grassroots movements, and the incorporation of new ideas into party platforms.
Step-by-step explanation:
Advocates of political party revival are seeing signs such as the emergence of new parties or factions within existing parties, the rise of grassroots movements or activist groups within a party, and the incorporation of new ideas or issues into a party's platform. For example, in the late 1950s and early 1960s, social issues became prominent in national politics, leading to the emergence of factions within the Democratic Party and a shift of Southern Democrats to the Republican Party. Additionally, the Tea Party gained influence within the Republican Party and its ideas were assimilated into the conservative movement and party platform.