New swing-state polling has revealed a rare — and alarming — consensus: Roughly equal shares of Republicans, Democrats and independents believe violence could plague the 2024 election. Why it matters: Former President Trump and his allies have already signaled they will not accept the results of the election if they believe it's "unfair," reviving the type of rhetoric that helped incite the Jan. 6 Capitol riot. In seven swing states, nearly half of Republicans (48%) and Democrats (47%)...