The POLITICO race to watch: Nevada Senate
Candidates: Sen. Jacky Rosen (D) vs. veteran Sam Brown (R) Ad spending since Labor Day: $47.8 million for Democrats; $36.7 million for Republicans Past results: Rosen won her first term in 2018, ousting incumbent Sen. Dean Heller by 5 percentage points, 50.4 to 45.4 percent. 2020 presidential result: 50.1 percent Biden, 47.7 percent Trump Cook…