republican, presidential, hopeful, sen, john, mccain, r-ariz, arrives, with, his, wife, cindy, in, waco, texas, monday, march, greets, david, mercer, gholson, after, speaking, town, hall, meeting, works, way, through, crowd, former, arkansas, gov, mike, huckabee, left, plays, bass, justin, graves, right, band, during, campaign, stop, san, antonio, gives, autograph, to, supporter, speaks