The average age in the US is 37 years old. Over the next 10 years, the Millenium generation will become the dominant voting group in the US. Them the Republican party will be over, The majority the Democrats have is massive in this group. Less religious and therefore less Republican
Demographics of the US paint another picture of Republicans vs Democrats.
There is a clear trend that shows the more educated someone is, the less likely they are to be Republican.
The older religious red necks are the bread and butter voters of the Republicans in 2020- but this changes with the younger generation.
https://www.people-press.org/2018/03/20/1-trends-in-party-affiliation-among-demographic-groups/
(https://www.pewresearch.org/about/)
The city dwellers are more likely to be Democrats and the rural Republicans.
The smarter sensible Republicans will continue to exist, but the dumber ones look to be on their way out.
The educational gap in partisan orientation continues to grow
Higher educational attainment is increasingly associated with Democratic Party affiliation and leaning.
Religious affiliation and party identification
White evangelical Protestants remain one of the most reliably Republican groups of voters, and the GOP’s advantage among this segment of the population has continued to grow in recent years: 77% of white evangelical voters lean toward or identify with the Republican Party, while just 18% have a Democratic orientation.
Urban voters grow more Democratic, rural voters more Republican
Voters in urban counties have long aligned more with the Democratic Party than the Republican Party, and this Democratic advantage has grown over time. Today, twice as many urban voters identify as Democrats or lean Democratic (62%) as affiliate with the GOP or lean Republican.
Overall, those who live in suburban counties are about evenly divided in their partisan loyalties (47% Democratic, 45% Republican), little changed over the last two decades.
Voters in rural areas have moved in a more Republican direction over the last several years. From 1999 to 2009, rural voters were about equally divided in their partisan leanings.
A wide – and growing – generational divide in partisanship
The generational gap in partisanship is now more pronounced than in the past, and this echoes the widening generational gaps seen in many political values and preferences.
Millennial voters (born 1981 to 1996) have had a Democratic tilt since they first entered adulthood; this advantage has only grown as they have aged.
Democrats enjoy a 27-percentage-point advantage among Millennial voters (59% are Democrats or lean Democratic, 32% are Republican or lean Republican). In 2014, 53% of Millennial voters were Democrats or leaned Democratic, 37% tilted toward the GOP.