In this bone-chilling report, it is explained that at this point over a million people on this planet have been forced out of their homes and obliged to seek refuge elsewhere.
For some of them, this is a direct result of climate-related disasters like drought and flooding.
For others this is a result of war, but it can be argued that war may be exacerbated by climate change events:

“Historically, levels of armed conflict over time have been heavily influenced by shocks to, and changes in, international relations among states and in their domestic political systems,” said James Fearon, professor of political science and co-author on the study. “It is quite likely that over this century, unprecedented climate change is going to have significant impacts on both, but it is extremely hard to anticipate whether the political changes related to climate change will have big effects on armed conflict in turn. So I think putting nontrivial weight on significant climate effects on conflict is reasonable.”

When homes, infrastructure, and food production are affected, and healthcare, maintenance and emergency services become overwhelmed, it stands to reason that increasing unrest and discontent is likely, mass immigration is inevitable, and that that will affect politics.

Far-right parties are gaining traction in Europe where anti-immigration policy is high on their agenda.

The far-right Alternative for Germany (AfD)…is polling 17-19% nationwide, around a record high for the party that now vies with Chancellor Olaf Scholz’s Social Democrats for second place in some surveys, up from fifth in the 2021 election when it secured 10.3% of the vote.
…
Far-right parties have gained ground across Europe. In France, the far-right has become a stronger rival at the ballot box, while in Italy and Sweden, they are now are in government.

As well as this:

The AfD, which disputes that human activity is a cause of climate change, has also tapped into concerns among some voters about the cost of the transition away from fossil fuels.

Tragic irony.