Easy! And first off, you're under a liberal delusion if you think that idiotic poll about Trump and Buchanan you've used for years is in any way accurate. It's ****, and everyone but you, apparently, knows that!
But to answer your question, (something you rarely do) the top 3 reasons (and there are MANY more) are:
1) Closing the border and deporting millions of illegals.
2) Opening up more lands for drilling and fracking, including ANWR, off-shore and on federal lands while eliminating the pile of new fees and regulations that Biden piled on to the oil industry which inflated gas and heating oil prices, and restarting construction on the Keystone pipeline .
3) Ending the war in Ukraine and stopping the billions of taxpayer dollars going to feed Zelensky's corruption.
4) (In case you can't count to 3) Keeping the Trump tax cuts from expiring in January, which Kamaltoe would not promise to do.
That enough for an ignorant Eggplant?