These are the things that tend to sway me in favor of voting support.
Good grasp of policy: in XfD and RfC, does not misuse things like WP:NOTPAPER and WP:IAR to get their way. Tries to follow both the letter and the spirit of a policy even if they disagree with it.
Participation in process: must be active in XfD, in a Wikiproject, and on RfA/RfC.
Has an attractive user page
Is a mergist or exclusionist
Has an extensive history of civility in the face of blatant bating