Some people: End all immigration to the US because we don't need more democrat voters coming in here.
Me: What's the worst that could happen? So what if the person in the Governor's mansion in Arizona has a D next to their name. The Whigs went extinct; the federalists went extinct, the democrat-republican party went extinct. If the Democrats win every governor's seat in the country (or at least 80% of them) and if democrats win 80% of the states due to immigrants coming here and voting overwhelmingly blue, then so what? A new party will inevitably replace the republicans. We've had FDR and Reagan win pretty big victories.
Life goes on and the party affiliation can matter for why you would vote for someone, but I don't think it's a good reason to exclude someone from the country simply because they are more likely to vote for a different party that you are. If you want them to vote red, then convince them too (but understand that they may also convince you to vote blue as well).
Like, what is the point in voting republican? To give more tax cuts to the globalists? If you aren't a globalist, then why do you care what the tax rate for globalists is? Wouldn't you care more about your kid being in a well funded school (only possible by taxing the globalists more)?