There is a sort of redistribution of voters for both parties happening right now; probably more so for Republicans than Democrats.
Wedge issues have taken surprisingly large roles in the political scene. 82% of evangelicals voted for President Trump despite President Trump being really awkward on religious grounds. Abortion is the king of wedge issues. Democrats see how they're being hurt badly in the short term on abortion in states that they otherwise could do better in. I visit a lot of Republicans discussion groups for insight, and interestingly they're also looking for abortion position adjustments, which I found really interesting, because I think Republicans have the stronger ground on the voter demos for abortion. While I don't have any proof to back it up, I think it's either a concern of long term demographic changes, or the general concern that the Republican party is splintering into three groups based on financial and social grounds.
Overall Democrats stand the most to downplay abortion and gun issues in the short term [something that mass shootings in nearly all demographics wasn't enough to influence change on].
Republican groups seem to feel their biggest concerns are that Democrats look like the party of fiscal responsibility; largely in part to the fiscal apocalypse parties, consisting of President Trump, but also the other extreme known as the tea party, aka freedom caucus, and [thank goodness] they're really concerned that the environmental data that continually comes out is making them look bad, and some are looking for a way to be the champions of the environment in this administration through tax reform without regulations, which I do not believe will work based on our entire market play.
Both parties are probably confused to the rise of populism in the world. They both have big donors which have played into this rise, and there is risk in upsetting the donors. This is really the meta of everything right now. The dual US shift, and world political turmoil towards populism highlights a very strained world economy that isn't being reflected in markets. Whichever party decides to buck plutocratic policies and empowers workers in the US is going to be the winner moving forward, and I think this issue is significant enough to redefine party lines by itself.