How do I combine polynomial rows of the same degree?

General
1 
reg2a_1=lm(game_rating~votes)
reg2a_2=lm(game_rating~poly(votes,2))
reg2a_3=lm(game_rating~poly(votes,3))
reg2a_4=lm(game_rating~poly(votes,4))

stargazer(reg2a_1,reg2a_2,reg2a_3,reg2a_4,type="html",align=TRUE,covariate.labels=c("X", "X", "X2","X", "X2", "X3","X", "X2", "X3","X4"))

Basically, I want to have all the X2 for example on the same row so in total there will be one row for each degree.

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