Vote both for now, as neither is in the lead right now and are incredibly close in terms of overall votes. Hard to predict which will pull ahead just yet, and unless they both become contenders for first, no harm in supporting them both.
To the various people voting to push the front, might I propose a compromise where we occupy strategic world instead? It would give us our pick of significant targets, and would still be a major battle depending on which we picked. We would even have the option of shipyards or production centers alongside strategic resources like fuel worlds or mining worlds or communication hubs. Either way, it's more impactful than just picking a given region of space and Invading in the hopes it'll encourage lesser commanders to aggressively seize worlds in the area.