By Tim Reid, Nathan Layne and James Oliphant (Reuters) – Donald Trump begins 2024 as the clear frontrunner for the Republican presidential nomination despite facing scores of criminal charges, a dynamic that would doom most other candidates and has confounded his political opponents. Those criminal charges include indictments for his efforts to overturn the 2020 election culminating in the Jan. 6, 2021 attack on the U.S. Capitol by his supporters. To try to understand his enduring appeal, Reuters spoke to five Trump supporters in five general election battleground states: Nevada, Georgia, Ariz…