pull the lever for sb? I don't understand it .Help me what's the meaning of 'ground game'and 'down-ballot'and 'use a ride to the polls' I'm reading hahaHere's the context 1.It is possible that disgruntled Democrats haven't *felt like* picking up the phone of late when pollster call,even if they are sure to *pull the lever* for Mrs Clinton in November. 2....John Kasich,still refuses to endorse him--may also hinder co-operation between his staff and those working for *down-ballot* Republican candidates. 3.Moreover,Mrs Clinton's vaunted analytics department can target persuadable voters whose doors await a knock, and likely supporters with a middling propensity to vote who could *use a ride* to the polls, with the pinpoint accuracy of a Facebook advertisement.