"Seize the day" is a phrase with positive connotations - from the Latin Carpe Diem - emphasising the need to make use of your time wisely.
Contrastingly, to "seize power" suggests something of a more negative tone - over-riding democracy to install a military junta for example. A military intervention might be helpful in this case, to "wrest control" away from those legitimately in power.
"SNP seizes control of Dundee Council for the first time"
screams The Scotsman today. They also point out the hand that (former Labour) Councillor John Letford played in the SNP's ability to "wrest control" of the council from the Lab-Lib Dem coalition.
I wonder if this is an indicator of why the Scottish print media appears to be in such bother. Maybe if they reported the news without such an inherent bias people might still read their stuff.
Anyway, I'm off to "wrest control" of the kettle.